That's normal teen behavior.. I experimented like hell with everything, that's my character, i climbed tries and buildings and fell out of them, i smoked things i shouldn't have and it started with alcohol (oeoeoe, is that the gateway drug?

It made me do some dumb stuff

) Other friends of mine choose not to experiment... that's there character. We are humans.. we do sometimes crazy stuff... including inhaling smoke and vapor and gasoline and paint, even with sex, how many straight girls french kissed another girl? Only to learn and realize they are not, while some of them learned that they really are and etc etc...
If the environment let them and if they have good loving parents often they experiment and move on. A few of them get hooked, but most of them are fine...
but if the parents are neglecting the child or the environment they grow up in is rough... good chance they will remain hooked on it for the rest of their lives..
We are sometimes to curious for our own good, but i guess that makes us, us. Nothing wrong with that if you ask me.