Who would have thought BYOND was full of so many disgusting drug users?
As for you: There's a difference between trying drugs, and using drugs.
Using drugs denotes a common usage factor. Someone who uses often.
Trying drugs denotes an uncommon usage factor. Someone who tries drugs once or twice, but doesn't bother to do so again.
In BYOND's case, a lot of the people here (who are actually speaking truth...) are most likely to be triers and not users. Granted there are a couple of (now former) BYONDers I've known who have used drugs.
So I'll sum up with: Yes, yes you can get addicted to Ice on your first hit. And no, no you don't have to have done a drug to know anything about it.
My first drag on pot didn't instantly give me undisputed knowledge on how it works and what it does to your system. Nor does your experience with 'near every drug out there' (I'll never believe this, by the way. No matter what you say) make you the be all and end all of knowledge on recreational drugs.
Ice is a highly addictive drug, and you can get addicted to it very, very easily. And in a lot of cases, that addiction can be on a users first time. Most commonly occurring in people who inject or smoke it.
For the record, addiction ends up your bodies dependency on a drug, but it starts off as "blimey, that was a bit of fun, I think I'll do it again relatively soon". The sheer fact OP is scared to death of what he's just done is proof enough that he isn't addicted. Paranoia is a fantastic reality check in situations like this. His lack of a good time is more than enough to take him out of the "blimey, that was a bit of fun" mindset and into a nice healthy "guh! I'm never doing that again ever!" mindset. Now all he needs is better friends.
As for my own personal drug experiences: alcohol, nicotine and pot are the only three recreational drugs I've done knowingly. (*sings* Never, never-ever, never sit your drink down. Never, never-ever, never sit your drink dooowwwn).