I understand all of you peoples views, we have our clear views and angles to the situation. When we (my sis and I) young, we use to peep at our parents having sex often, and often seeing my mum sucking my dad in the kitchen. And thats how all things started. As for now, my sis still needs the feel of the big O when we do it, she gets it from no one else, with condom of course. Emotionally she is very normal with her life, I am gay, so with my sis, its different. She is very helpful, after my week in camp, the release is a big relief. I am sure we not the only ones, just that such thing are very taboo and extremely closet. And to add, my parents are almost 50 years old, they are still at it very often.