It also turns out raising children also is not negatively affected by the parents being gay. (Plenty of studies on the subject, go read some).
Leaves actually having children. Is your argument that we all should breed? Then your argument is seriously broken, the world is about 300% over capacity already.
So, no - it's still rooted in hate. (Or fear, really)
People REALLY hate the idea that they’re responsible for things they haven’t even conceived of.
With newly known ones, I feel bad, and then I try to understand how I could be better.
I’m not sure I understand your question.
By the way today a man and a man, or a woman and a woman, or whatever, can have children , and in that case should provide a stable home for them. In my country most gay couples that bother about marrying, usually also want to raise children and provide them with a stable home.
This' "gays" are destroying family values', is a silly fallacy, because these marrying gays, WANT a family.
Saying Your family is OK and their family is somehow dangerous reeks of hate. .
The point is that differentiating between a gay couple and a straight couple on anything (other their sex organs) is just absurd and without any hold in reality. Even if there was a significant difference between these couple regarding child rearing, the burden of proof is on you. The fact that marriage between man and woman is old and known doesn't mean it is good, or better than other types of couples.
Most people who assume this difference, assume it a priori to any knowledge or facts. People who want to limit others because of ignorance is called hatred in my book, even if some of your best friends are gay...
It's curious that I've never seen anyone campaining against childless marriages, only against gay marriages.
Your simplified model falls apart the moment it meets the real world.