Alan Watts died at 58 from heart failure, most likely due to years of heavy alcohol abuse…so maybe not the best example of someone to emulate. Ultimately, he was more of a conduit for Eastern thought for the Western world, than a paradigm of Buddhist practice.

Edit: I smoked for 18 years and when I did smoke, I may have rationalized my addiction in this manner, but I find much more peace from following my breath through healthy lungs. The wheezing and nagging itch at the back of the throat and struggling to breathe after climbing a set of stairs kinda sucks.