Not only is it quite pleasant after I've had a beer or three, but they're the ultimate social hack for introverted nerds. Are you at a crowded bar/party where it's impossible to have a proper talk with someone? Step outside for a smoke, and you can instantly have a nice, low key conversation with the other smokers. Lulls in the conversation aren't awkward cause you can just go back to taking drags; and once you're done, you can keep talking if you like the person- or have the perfect excuse to head back in if you don't.
Highly recommended.