Meth too. Any drug actually. I once found some oxy on the floor at a store, did it once, got nicely high and that was it. I wasn't like "Woah man! I gotta get some more of that!!" Seems like thats what most people think happens when you do a drugs thats addictive.
Seriously, think about it...why are you even experiencing anything right now rather than non-existence? Think about all the people who lived and died before you and you were experiencing nothing then. So for the same reason why aren't you experiencing non-existence right now, while "your" body goes and does all the shit that it does?
It's how all of you are...cool, and somebody always has something smart to say, and besides that, you are all cool and interesting people in general. You all are great.