For people who enjoy equality, yes. Probably not with the homophobes and bigots.
Give a concrete and objective reason as to why adoption should be given to one segment of the population and not to another.
Where does the Constitution guarantee the right to adoption?
Because a child should be raised by both a mother and father figure in their life. That means, male and female. It's basic human psychology.
There is no evidence that a child being raised with gay parents is at any disadvantage or is harmed in any way. None.
Correct. And one thing we do know that does not require having to revert to some statistical studies (for those who have no real understanding of gays), because it is intuitively obvious, is having two loving gay parents, is better than leaving a kid in a orphanage. And that is the choice in some instances.