I think there are some peopel that might choose to “experiment” out of choice, but I’ve seen too many people who anyone who wasn’t from outer space would immediately peg as homosexual (of the “gay” or lesbian variety) and would turn out that was the correct guess. Mannerisms, speech, even body build. And there are too many people who knew they were “different” even at an early age, long before puberty. If it’s not a gene or genes, then it’s something that happens in utero.
“People”, not ‘peopel”!