I think its silly to even consider that gay parents wouldn't be as good as straight parents. They're just people. I'm a person you are all people. If they are people who are caring and loving and want to have a child, they have just as much right.
There have been many studies about gay parenting. There is absolutely no indication that children parented by glbt parents are any different from children parented by straight parents. There is no significant difference between the two groups.
Also, as for the common negative stereotype that "all gay people are perverts" or "all gay people are only after sex." There is no statistical relevance to that either. After adjusting for population, there are more straight child molesters than there are gay child molesters. Saying that is just as bad as saying "all black people are stupid." Some parts of our society just haven't gotten to that level yet. We'll get past gay discrimination just the way we got past black discrimination, and female discrimination.
I placed my son with the most wonderful people I've ever met in my life. It has nothing to do with the fact that they are gay. I just thought they were the best possible parents for my son. They are. (another plus to two dads: I always get to be his mom

)
Chelsea