The retarded behavior against people who just want to live their life in their chosen way, and which does not in any way affect the lives of others is a real blemish on our society. And I fear we will not be getting rid of this during the rest of my life.
Frankly, I really don't understand what the fuss is all about, so what if some people like other people from the same gender. Just let them be, it is their lives after all.
Just like any binary system, all combinations in the table are valid combinations, those for whom the 'bits' line up in some way or other do not get to the tell the others they can't or should not exist.