I'm sorry that your pain has brought you to a place that has you advocating a position that is guaranteed to cause more pain to other children. You must know that children will continue to be raised by same-sex couples. Gay marriage doesn't deny children anything. It grants them equality.
I grew up a straight girl in a gay world, the opposite of what most gay people experience, but with the same problems of lack of place. I didn't feel that I made sense in the heterosexual world either.