1. Yes.
And it's a FETISH, not a kink or a turn-on. People seem to be pretty confused by the difference on this thread. A kink or turn-on is something you can take or leave at any given time. A fetish is something you AT LEAST need to think about ALL the time in order to make things "work." I have plenty of kinks (like other people), but only one fetish.
2. Without going into too much detail (it's too personal)... Well, I'm a sadist. (I don't consider that a "fetish," I consider that more like a sexual orientation.) I'm not sure why I'm a sadist, except that when I was a kid I was really, deeply fascinated by the limits of what human bodies and minds can endure. By 9 or 10 I guess I just eroticised suffering - I suppose in theory I could have ended up a masochist instead. Maybe it's just some quirk of personality that made me "swing" one way and not the other.
As a kid, I was turned on by some fairly extreme stuff, very sadistic stuff, and I was scared that I was evil and would grow up to be a serial killer or something. When I was 13, I basically stumbled across some BDSM erotica and found a "safe" version of some of the things I liked earlier. And I sexually imprinted on it, basically. I remember pretty much the exact moment! So that thing I imprinted on is now my fetish.
Outside of that I have some fairly bog-standard kinky turn-ons. Bondage, impact play, shit like that. I can't think of specific reasons for most of those. I think at least part of the appeal of bondage to me is physical safety, because I was abused as a kid. (Personally, I don't think the abuse caused my sadism - I know that's a popular theory - although I can't prove it.) I always have my guard up around people a bit in case they try to physically attack me, and the idea of being safe because the other person is 100% helpless and unable to hurt me appeals. In general, I know I have control issues from a chaotic childhood - I really need to be the one in control.
Outside of BDSM:
-Androgyny: probably a bit of a narcissistic/"I can relate" thing because I am an FtM.
-Panties with lace ruffles in the back: no idea, but I like booty, so adding texture seems nice.
-Futuristic/sci-fi settings: what can I say, I'm a huge geek.