You can become psychologically dependent on it.

I would definitely consider myself being 'addicted' in that sense when I smoked pot.

I didn't get any joy out of recreational activities I was engaging in unless I was high first. I always felt like like the buzz wasn't as good as it could have been if I were high.

A few months after quitting that went away though.

Weed also made me lazy and paranoid after a while, so it was actively damaging to me.

I don't smoke anymore.

Is this an honest question? I mean, really? I'm as pro-legalization as they come, but it is well documented (and well known) that yes marijuana is addictive. For example, you could start at http://en.wikipedia.org/wiki/Cannabis_dependence, then http://scholar.google.com/scholar?hl=en&q=marijuana+addictio..., and work your way through 5 decades of research from there.

It's shocking that everybody talks about legalizing but nobody talks about that. Thanks!