That's a lot of puff-puff, and nice work by Whirled.
The drinking and smoking are integral to Mad Men, and not just because it's a gesture of fidelity to a period. There's a close association between creatives and artists. In those two camps, you've always got this tragic notion of burning on both ends: being constantly hopped up on something and doing your job anyway - maybe even needing the former for the latter.
Also, still fresh out of Cannes, I can attest that this attitude, this lifestyle, is still alive and well in the industry. (The hyperlinked post is about people discussing ways to quit, but that's also part of the mantle of smoking.) The world may have moved on, but the lone creative still gets something out of lighting one up. It's a legacy, nicotine-laced shackles of genius and suffering that bind us not just to Don Draper but to Mark Twain and Sartre.*
Last year AMC enabled users to create Mad Men avatars. Cigarettes, of course, were an accessories option.
*This is flagrant nonsense actually. I smoked a lot while working last night, more out of computer rage than the need to feel metaphysically close to those of my ilk. Also, Mark Fiddes and I came up with another theory why smoking is such a fixture in open-ended professions: it's a measured form of procrastination that also seems productive - like, "Oh, need this to get in the zone. I'll just be seven minutes."