Can'tChainTheSpirit,
I'm not sure that follows because you're equating two different things.
What would they be?
Yes I want him to be happy and to be happy you have to live, but equally to be unhappy you have to live, to be in pain you have to live, to self hate you have to live.
This is why I've argued that we should want people to live not for its own sake but under ideal enough conditions and once those conditions have been met, it would be better to live than not to. After all, in order to have pleasurable sex with a corpse a necrophiliac must be alive. Sexual desire is a desire for a positive state of affairs, whereas when we're trying to avoid the feeling of hunger or physical pain we're trying to avoid something negative (as in, a necrophiliac's desire for sex with a corpse is packaged with an implicit desire to live; not necessarily for its own sake but because that's what would allow for sexually fulfilling experiences, but he actively prefers that other people not be able to benefit from the same; or at least he prefers a state of affairs that precludes their similarly benefiting from what he wants to experience. Death can cure sexual frustration but the object of sexual frustration is the absence of sexual pleasure; the desire for which is the only reason why people experience sexual frustration to begin with).
I don't think it's right to project one persons state on to another person. It's like if someone wants to have sex with a woman it doesn't mean their partner must want to have sex with a woman, of if one person is Christian then their partner has to be Christian for them to be happy.
I agree because different things can cause or be objects of happiness for different people and happiness is what's ultimately good (although with the Christianity example, I think the question from the perspective of someone who takes the religion seriously and literally would be whether or not Christianity is objectively true). I don't agree if you mean that it's not right for someone to want others to experience happiness just because they want to experience happiness for themselves, if happiness is inherently beneficial for anyone (or more to the point, if anyone's happiness is inherently good simpliciter) then it's inherently beneficial for everyone (and if one person's happiness is inherently good then every possible person's happiness is/was/would be inherently good, a distinction between one person's and another's is an arbitrary double standard because happiness is happiness, we're just selectively considering the same thing to be ultimately good, bad or neutral based on criteria that has nothing to do with the nature of happiness). What would be the basis for saying that it's not right to project one person's state on to another (e.g. if I like women, you had better like women too)? In what way would you see that as an unfair assault? If it stems from basic golden rule reasoning you're making an appeal to consistency which is what I'm doing in saying that there's something problematic about a preference for dead bodies as dead bodies; which is a preference for someone to be incapable of sexual pleasure (inconsistency per se is not a moral problem, I would rather that someone who believes there's a moral obligation to maximize as much suffering as is possible be inconsistent in sparing at least some people pain they would normally cause than to consistently cause pain to every single person they can but all inconsistencies are arbitrary and irrational, most of our beliefs are unavoidably arbitrary; at least ultimately, but there's a non-arbitrary alternative to inconsistently holding a certain belief or value which is holding it consistently, every ethical theory besides hedonism is also arbitrary and hedonism is the non-arbitrary alternative).
My issue with necrophilia isn't just some random arbitrary personal hangup (there are other things that turn me off, that might even 'bother' me beyond personal disgust, but I see them as wholly unproblematic in themselves so if they can be a source of happiness for other people that's great), it's rooted in my belief that, depending on how exactly we define it, necrophilia necessarily implies devaluing the happiness of others and unlike opposing AMSC on principle there is a non-arbitrary reason to oppose a mindset that devalues the happiness or suffering of others (because regardless of intuition or what conclusion you come to upon reflection via subjective logic, we actually experience happiness and emotional distress as inherently good and bad, their being self-evidently good and bad is what makes hedonism the non-arbitrary ethical theory. The inherent value of happiness can't be illusory because it doesn't simulate something other than itself that it might misrepresent).
In this, he is sexually attracted to dead people and you are right, they can't love him back. But some people have sexual relationships with dolls and sex aids that don't love them back,
I don't think the psychology, in practice, is entirely the same (using a sex doll vs. using a corpse) but, again, I'm willing to concede the possibility of someone who genuinely values the happiness of all possible people yet can 'sexualize' someone's corpse with no cognitive dissonance. Even if such a person is practically possible, people who use sex dolls, dildos, etc. are generally using them as fantasy or masturbatory aids; they would ideally prefer conscious, living partners.
some people have sexual relationships with people just for sex and no emotion (friends with benefits).
I've never personally understood the idea of 'sex without emotion.' I understand sex without commitment, but it seems to be social activity to me. Affection/wanting emotional intimacy is related to the psychology of valuing the happiness of others (and I think that valuing someone's happiness is necessarily personal) but even if you can have sex without 'attachment' or 'affection,' you can still value the happiness of a casual sex partner you have an 'impersonal sex only' agreement with, you would still be expected to show certain courtesies, I'm sure (again, I don't 'understand' the idea of 'impersonal sex,' sex seems to imply emotional intimacy for me, but it might be besides the point).
A person could have a rich friends circle or a partner with the same attraction, have companionship, and yet only be attracted to dead people.
I didn't really understand this point.
It's like people who are sexually attracted to toddlers who may not be able to express intimacy back quite as equals but it doesn't mean the relationship isn't fulfilling to those experiencing it.
Toddlers sometimes masturbate so they might be capable of some sexual gratification, even without the full-blown cyclical libido of someone who can menstruate or produce sperm. It's also possible that they could enjoy some gentle sexual contact as play (it could be 'non-sexual' from their end). Even if they are completely neutral about some kind of sexual contact, someone who prefers toddlers isn't necessarily devaluing their happiness because nothing about some kind of sexual contact in some hypothetical fantasy scenario would have to cause them emotional distress or death. A necrophiliac as a necrophiliac (again, if we're talking about someone who prefers dead bodies because they are dead) wants at least some people to be dead and their deaths would exclude the possibility of any future happiness for them.
I also wanted to add that although a lot of people who are turned on by the idea of sex with a corpse would be repelled by the reality of a significantly decomposing corpse (e.g. the smell), I don't think that a basic attraction to a corpse at some early stage of decomposition is unusual or rare considering of the resemblance to a living body. It seems to me that, in practice, the appeal is rooted in a fetishization of death (in the same way that being turned on by police officers as police officers has nothing to do with their being physically different than people with other occupations; it's the idea of being with an authority figure, the power imbalance, the unexpected intimacy, etc. that excites them).