Hash is definetly addictive – I had a bitch of a time when I stopped smoking it (I’d been smoking every day for 8 years at that point). Rattled like buggery.
Anybody who says it isn’t addictive hasn’t tried to give up (I gave up because I’d stopped enjoying smoking, so the psychologically addictive argument doesn’t really hold water as far as I am concerned – you need to have a psychological draw to want to continue for that…ie you need to be enjoying it)
Like anything you take though, treat it with respect… Use, don’t abuse..raaaraaaraaa. It took me smoking all the time to get addicted.