I've heard enough of the "rather have gay parents than none at all." Honestly it's not like these kids have one shot at getting adopted. It's not like
"Well Johnny, you either have to live with this homosexual couple or else your whole life will have to be spent here and there will be nothing you can do about it. Your whole life now hangs in the balance. It's your choice."
It's not like that at all, most kids have tons of different parents that would adopt them (assuming that the child turns down every couple that he meets).
Also, it's definitely not "necessary" to have a mother and father figure, but by all means life is so much better that way. Imagine a girl adopted by a gay guy couple, what happens when she gets her period? She has no woman to talk to, except her friends (or older sister, cousin, etc. if there is one...). As you probably know girls have such a strong bond with their mothers for reasons being that she depends on her mother in these times in her life.
My brother has a friend (former boss) who was a lesbian. He asked her if she would ever adopt and she (QUOTE ON QUOTE, LITERALLY) said "Hell no, that's not right for the kid." I remember the exact quote. Although other homosexuals would have different opinions, obviously, you can see that for the child it's probably better to have straight parents.
But if there ever was an actual situation where little Johnny should either have gay parents or none at all, then of course they should adopt, but how often would that be real?