Hmmm...
this thread has the fine beginnings of a pub...
*snaps fingers*
*bar stocked with energy drinks, cider, and sundry liquors materializes*
*couches, tables and chairs appear from thin air*
To add to the debate though, reading through these posts what seems to be emerging, at least to a degree, is that a number of us are basing our views on personal experience, and overall background.
I recall for myself that at 15/16, I did not like boys the same age as me.. Not because older guys were in cool bands, had long hair or anything like that..
(Well, OK, the leather jackets were kind of sexy...) 
Simply, they were a lot more interesting to have a conversation with, and they'd outgrown the urge to create farting noises with their hands and armpits. Most of the women I've met have similar experiences to relate.
And yes, it is also the case, I think, that women at that age are beginning to explore their sexuality. I'll be blunt here, when a woman is sexually inexperienced, it is actually nice (and a lot less painful) when her partner knows what he is doing...
