I personally regard myself as an asexual. Something which, to me, is much more difficult than being homo or bisexual. Ever since I was around 13, I realised I just didn't feel the way towards other people, of either gender, that other people my age were beginning to feel. I spend years thinking it was a phase, but when you hit 19 and 20 and still feel the same- you know it isn't. I've never found another person physically or sexually attractive, and the idea of sex itself... no thanks. When people go round with the "Phwoar, nice arse", or "I'd do her", I just don't get it at all. I've had lads mags shoved in my face- but the fact is, I don't find topless women appealing at all. I get no end of judgement and flak for how I feel (and that's if people even believe me in the first place), and I hate it. Why can't people just be accepting and understanding that people feel this way- why do they feel the need to mock, or try and convince me I don't feel this way? It's not as if I chose it.
Funnily enough though, there are some cartoon animal characters I consider attractive- though I still don't consider it sexual.