I used to smoke too.. I don't hang out with smokers anymore, seems that's the only thing WE had in common too! lol..
I would imagine your husband (if he doesn't have an issue w/ drinking) could stop or tone it down a bit so there's not such a disparity at home, and your friends... well if they're truly friends outside of drinking, you'll find it's really cool to get to know them doing non-drinking things, I have found that in the few girlfriends that I kept around (and that kept me around).
I will never be embarrassed being known for my not drinking.. or my not smoking.. ew!