Take coffee for instance. When I stopped drinking coffee I had headaches, was a dick for a few days, but that's it. Which is pretty easy compared to, say, heroin (so I hear).

With weed, I didn't have any of that, but I craved the relaxation it brought. The feeling of not giving a fuck about anything for a few hours was great, and I longed for it. I still long for it sometimes. And I think that's the dangerous thing about weed being labeled as "non-addictive."

Just because you don't have a physical reaction to abstaining, doesn't mean the emotional reliance is nothing.