I never had a problem with the thought of two gays raising a child, because it's not like heterosexuals and single parents are doing that great of a job overall. We have a world full of spoiled, entitled, self centred, lazy morons... and it just seems to be getting worse. Everyone is trying to shield their kids from as much adversity as possible, so they grow up soft with no moral fibre or character to deal with the real world. What's the worst two gay parents could do? Produce another dud, another wimp or another violent criminal? Straight parents have been doing that for a long time.
It's like people who complain about gays ruining marriage, when over half of heterosexual marriages fail miserably and domestic violence is at staggering numbers. It's not like heteros are setting the gold standard with any of these things.