I don't see that recognising the reality of homosexuality is in any way "celebrating" it. It is what it is, and Pride in it's original form as was simply a way of showing that homosexual people are normal members of society.

I struggle with the primacy/paramount of breeding and family. I certainly don't think there is a free-floating duty to breed and form groupings (families) within which to raise children, but I'm open to the idea that it is to be encouraged.