Only a small percentage of gays are homosexual from their birth. Most are mental deviated men. There are various reasons they change this way. Others even "evolve" into bisexual. As from my point of view marriage should be strongly not allowed to them. It's a sacred institution and this not contemplate gays being able to marry. As far as I know most of them should be sent to a russian gulag or chinese prisons. They don't have respect for what is called "ethic" way of leaving among people especially when they have the gay pride. I propose to have an "Ethero Pride". God made the man and the woman, not the gay!!