I didn't read any other responses.

I say you're not missing anything. I smoked a lot in HS and early college. To quote South Park "It makes you ok with being bored and one day you wake up and realize you're not good at anything", plus I spent waaaaaay to much money on it.

Cigarette's are an easy no (smoked for 4 years). The easy way to not get addicted is to never try it. Again, you're missing zero.