Harold: There was no single event or series of events that seems to have sparked the interest, it was just there. This is true in my own case as well. This would tend to indicate nature over nurture.
Are you saying an interest in childhood tie-up games etc? In my case I can't help wondering how the other kids involved turned out! I don't recollect whether I instigated all the games, but I certainly did some of the time. Did they foster a BDSM tendency or were the tie-up games somehow an exploration of a pre-existing inclinatione?

All very interesting. I know for sure that we'd rather they found a cure for cancer first, but it's odd that we really don't know the answer to what seems a simple question of whether our sexuality is innate.

BF