Why are you Against Homosexuality (to theists)

[bennyboy]

Many ethical systems base their ethic on obtaining the function of the human body (for instance, using science to understand the function of the body and hence the purpose or goal of it).

Homosexuality seems contrary to the function of the human reproductive system. It does not support life. As a result, there are (ethically significant) aberrations, such as men having sex with hundreds of partners (because of the way that the male reproductive system processes lust). This is something that societies are not used to having dealt with. As well, there are consequences for raising children with two men or two women because this is different from the way that humans are used to relating to a biologically driven process of mothering and fathering.

I've definitely heard that one before. I even used to believe it when I was a Christian. Statistics state that homosexual parents are just as good as heterosexual parents, though. There's nothing scary going on there. I'll trust the numbers over the rumors.

There are definitely individual implications of homosexuality on a local level.  If a woman marries and is forced to stay in a monogamous relationship with a man who is gay, then she is obviously likely to have fewer (or no) offspring.

However, and this is speculation, I think that homosexual people fill in a lot of gaps of a more polarized sexuality.  Gay men seem more socially sensitive and (at least I think so) intellectual than average men.  Gay women seem (and again this is just my bias) stronger and tougher than average women.

In other words, I think homosexuality adds a great versatility of skills to the general population, perhaps at the risk of reduced genetic fitness at the most local scale (i.e. less chance to reproduce personally).