To be honest, it sounds like you just like the feeling weed gives you, which is the reason why half the world likes it too. I mean, I'm not a psychologist but I think the reason you don't stop smoking it is because you don't really want to. Am I right?
I get the feeling though, that you might be worried that you're an 'addict' that you might have an addiction problem. But seriously, going by what you've written here, you sound responsible in your use and that it's not effecting your life in adverse ways - which is the case for most smokers.
I like to have a little joint now and then, but have no intention, at all, of stopping. As I've always said - you have to have some pleasures in this life.