I'd probably be drinking, smoking and trying out gateway drugs.
I was the only hardcore regularly gaming guy in my last school and the guys i hung out with during classes wore assholes. Eventually, they all began smoking, drinking, going to parties and trying out mild gateway drugs. I never caught on to that shit since i was too buzzy playing World of Warcraft and Cod 4: Modern Warfare.
So, they more or less made me who I am today.