I have always been confident in who I am, and comfortable in my skin, even when I was younger and constantly being bullied, I knew who i was....
Thru high school and into early college my experiences were with women, because str8's were the crowd I was running with (to my knowlege), and all my friends had girlfriends. BUT I always knew something didnt FEEL right, and I got no satisfaction or enjoyment from it. Later in college I met a different crowd that changed my path, and I immediately knew WHO I was supposed to be. My life has been good and fulfilling, so i would NOT want to change a thing in terms of my identity, not even for a moment. (However, like @BuffaloKyle , I find FTM fascinating and hot..... Even shemales with huge cocks could work for me !)