in fact up to the 1970's this was classified in the DSM-II as an act of deviance. And it really is no different than other deviant and 'abnormal' sexual acts. I won't get into the trail of other problems that concern homosexuals exclusively (for instance their highest rate of anal cancer) or kaposi's sarcoma etc. but strictly from a religious/ or naturalistic point of view, it is actually worthless to be homosexual. If we are to ignore religion and think of what good homosexuality brings, it brings nothing.. futile cycles aren't inspired by 'nature' but by a sick psychology, and that is in fact what it is-- a psychological rather than a biological aberrancy!
I can't believe we are even discussing this like it is normal status quo!
all the best