Yes of course it's selfish if a child grows up with 2 loving parents of the same sex. Better off having them bounced from foster care to foster care. Yep much better. This brings me back to the original question. You opinions are purely based on religion. Yes a Christian wedding is not fit for gays, but a legal marriage by court so they can have the same benefits as you? What's it to you? I don't know why you or anyone cares. There are much bigger issues to deal with, like all the kids in shelters and unfit foster care.
(White shark, btw gay couples do adopt. I have heard of thoes situations.)