Are you serious? Take it from a fellow smoker, there are zero health benefits (I've dug that hole as deep as it can go) and if you're not addicted now, it's only a matter of time before you are. If you can stop whenever you want to, you should, and if you don't want to, guess what: that's what being addicted means.
To be fair: nicotine is a mild stimulant, which could be a good thing. But caffeine is stronger, easier to regulate dosage, cheaper, less addictive, tastes a lot better, isn't socially frowned upon, helps you to shit and doesn't give you cancer. So smoking for the stimulant effect is a stupid thing to do.