It's a tough issue. I agree that it's unfair for children to suffer. I was bullied pretty consistently in 5th-8th grades and it sucks. Consider though, whether the kid is going to suffer more being adopted by a gay couple versus not being adopted. As for whether they want it, I don't think that you can really give babies a choice in the issue, and chances are that when they're older they aren't going to reject their parents purely because they're gay. In the meantime, we can also work to decrease ridicule as much as possible. Mandate universal teaching about homosexuality in health classes (I think the lack of nationwide educational standards in general is also a problem), create stricter rules against bullying and improve efforts to enforce them. It's not going to stop all ridicule, but it starts on a path towards equality and tolerance.

Can you imagine in this day and age if the religious right argued against letting black parents adopt white kids, or against protecting black kids from racially motivated bullying in schools? Eventually, the issue of gay parents adopting won't be a big deal, but it takes action now to get there.