[Treader]

Wickman, once again- name one civilization that survived the full cultural acceptance of homosexuality. You have the whole range of recorded world history to choose from, mister. Just one example.

[Charles Wickman]

full cultural acceptance

What exactly is "full cultural acceptance"?
And further, why do you assume that is what gays seek?

You might as well ask me where "full cultural rejection" appears in history.
Your question is pointless.