more than likely you're not getting high cause popcans suck for the smoking...are you a cigarette smoker? if so you might be smoking wrong; I find that if I smoke a joint like I smoke a cigarette, I won't get high at all...you have to take long, deep hits on it, and hold it in for a few seconds at least.

Definitely get a glass pipe if you are going to be smoking regularly though; take care of your glass, and it'll take care of you.