Ah, I see why SF attracts so many homosexuals, cost of living is much lower when you don't have to provide for children. So, homosexuals both get a nice living area, and all the heterosexuals who form families and might look down on their choices are filtered out. Best of both worlds for them.
1) The cost of living is still outrageous even for couples without children, and the gayest areas are among the most expensive. SF attracts homosexuals due to the culture and history.
2) What does raising a family have to do with "looking down" on anyone? All the parents I know in SF raise their kids to be as gay-friendly as they are.
Also: you are aware that some kids are gay, right? Most of them figure it out very early, it's only homophobia that makes them suppress it until university.
You're right that there is a political side effect of de-prioritizing children, since most gay or lesbian couples are childless. But that's also fueled by the high concentration of childless professionals in SF. It is a snowball effect that will accelerate until the city's unlivable for people with children.
I just don't think it's a conspiracy. One might argue that the real conspiracy is gentrification, where family-friendly neighborhoods are swept away to provide yuppie housing.
I don't think it's a conspiracy, just the result of a couple variables.
At any rate, #1 supports my point. Since they are the most expensive areas, they'll be even less likely to host families. On the other hand, if gay people tended to live in low income areas, that would invalidate my hypothesis.
#2 doesn't really cause problems for my argument either. I suspect that if anyone is going to be gay-unfriendly, it is going to be heterosexual couples who have children. Especially if they have a large family they likely belong to a religious tradition that considers homosexual sex to be immoral. So, if most people, invariant over whether they have families or not, make an effort to be gay-friendly, I still suspect a random sample of families vs singles will turn up more gay-unfriendlies.
Finally, childlessness may also cause people to choose homosexuality. Most people want sexual intimacy, but they don't want the risk of having children. They can use a bunch of unreliable methods to avoid producing children in a heterosexual relationship, or they can take the easy way out and choose a homosexual relationship.
