@Thomas,
Good point, Thomas.
The whole question of this thread is about intolerance.
It is acceptable for a single parent to raise a child alone. What changes if there are two people who share the task, regardless of what their relationship to eachother is?
I would propose that it is better for a child to have two parents that love eachother and stick by eachother, even though they are of the same sex, rather than having a mother with another husband and a father with another wife, as is a growing trend today, as divorce becomes more and more common.
A strong reservation I have had to this issue in the past has come from the idea that gay parents would likely raise a boy to be a gay man, perhaps not by intention, but by example, and that this would not be fair to the child.
But considering the troubles homosexual people face in being allowed to make their own choice, I think they are very sensitive to this issue and would perhaps be better suited to raise a child with fewer illusions about sexuality than heterosexual parents with a christian set of values.