I was much the same at your age, I think the only alcohol I would of had would of been maybe a sip of wine that my parents gave me at dinner sometimes. But of course I knew of others my age who were getting drunk and having sex, but those were the ones who looked old for their age and I'd say it safe to assume the majority I knew weren't at 14, but I guess things are a little different now only 6 or 7 years later and it does seem that kids are growing up faster both mentally and physically.
But anyway, back on the parents thing, it shocked me at Christmas when my Aunt and Uncle allow my 8 year old cousin to have half a glass of wine with the meal. A sip would be fine, but half a glass....