That'll change within six months of you going to college, if you're going to a larger university. I knew people in high school who reveled in the fact that they were straight edge more than you or anyone I could possibly know.
Within their first semester of college, two of the five had picked up smoking, they'd all started drinking, and three of them started smoking(weed). At least three of them started taking mushrooms occasionally, as well as ecstasy, and I think one actually started experimenting with heroin.
These were people that would stay in their own group, never talking to anyone else that might have been labeled as anything but straight edge, and if they did talk to other people, it was to look down on them. They would literally hate anyone that didn't conform to their beliefs, man. They were pretty bad.