Very interesting debate.
In Spain, gay marriage is legal, or women-women. And they can adopt.
35 years ago, a gay, a "refined sensibility man" had a hair cut in the middle of the street by the police. And he could receive any "biscuit" by the fascist.
Actually there is not discrimination.
Couples that want to adopt, hetero or homo, have to pass a psicologic test.
Libertad, Igualdad y Solidaridad.