no its not, i know people which rinse g's of the stuff every weekend, they dont become dependant on it at all..
lucky mother
and here, in the UK we have rolling tobacco, which we use in our joints. alot nicer than 'cigarette' or 'pipe' tobacco those are just rank.
if you really wana get cained without the cancer, use a vaporiser, costs like £10 from www.everyonedoesit.com
oh, and dont try the 'legal highs' they have on there, they are bollocks. (£4 for an oz??)
About a month ago I got together with a bunch of friends and smoked from a really nice vaporizer, there is no smoke at all, it's like taking hits of pure THC. We passed it around taking hits for about 2-3 hours, it was probably one of the nicest highs I have ever had.