No, just humans!! And homosexuals ARE humans you know! If two people want to marry, because it means something special to them, just like it does to me in a ‘conventional’ marriage, I don’t want to stand in their way. As for procreation I’m not sure where the fear of falling population comes from… If it’s because the baby boomers want enough young people to look after them in their dotage - then that strikes me as selfish in the extreme - where would that end?! Already the planet cannot support our present population with our high consumption rates.
Perhaps homosexual couples in a secure relationship could offer loving homes to some unwanted kids languishing in institutions.