Meh, like the poster above me said, it's not physically addicting. I'm nearly a daily toker now, but I've been job hopping a lot recently in the past year so I've had a few dry spells where I've been wishing I had weed. Wouldn't call it a "craving" though.

You probably just enjoy getting high like the rest of us. And want to more often. It's not necessarily a bad thing or something to be worried about.