I'm admittingly coming at this from a different angle than most will expect. Actually I'm not going to rehash the citing of Biblical scriptures dealing with same sex relations but from a non-Spiritual direction all together. In fact I'm not even going to make any statements about it at all but rather ask, to those who are non-Christian, non-religious, or do not believe in Creation or a Divine Creator, a question regarding homosexuality.
IF we are just evolving creatures just each a part of all life entities all springing from one molecule or primordial soup/ooze, if you will, then why is there the distinction of sexes at all? Why are we just not one sex that just duplicates and replicates and divides? Why would there not be cross species replications even but rather we are limited to variances within our own human species? Would the existence of homosexuals or one sex that should have been another not fly against natural selection itself with the strongest eliminating the weaker over all these years? By this I mean obviously same sexes are not going to reproduce thus would natural selection weed out or breed out a condition that would threaten the natural process of male/female reproduction over time?
Just say I'm curious how a non-creationist type person would explain how such would happen and why it is so much more prevalent in humans over all other life forms that exist?