Sexuality is not just the desire to ... stroke one's genitals, it's a method to build and sustain relationships, to continue your genetic line etc etc...
Animals don't really "build and sustain relationships", though.
Anyway, the point is not to say that the desire to have sex with a person of the same sex is a construct of modern society. The point is that this was not understood as, in any way, something comparable to modern homosexuality (ie a general and universal preference for the same sex). Maybe I didn't do a good job at explaining it, but I had a gender class (taught by a gay professor, no less) which did a good job at it, and I can include some bibliographic reference.
philosophical progressivism
Quick question: Is this the whole "the arc of the moral universe is long, but it bends toward justice" thing?
Yup. This quote is one of the best summaries of my thought I've ever heard.
Antonio V, it's not that we don't get what this guy are saying, it's just that we think it's arrogant, meaningless and stupid. Yes I get the idea that modern gay identity are a relative new social construct, but I happen to think that being gay are much more basic than that, it's about people both being sexual attracted to their own sex and falling in love with people of their own sex, and that's not new. Just because people in the past didn't take part in Pride Parades or other stereotypical modern aspects of the gay lifestyle or behaved in stereotypical gay manner, didn't make them less gay.