What a load of pious . I'm not a smoker, but I utterly despise the modern phenomenon where people seem to think that they have the right (nay, duty) to lecture grown adults on what they can and cannot put into their body. What the hell does it have to do with you or anyone else if a pilot chooses to smoke? As long as they can pass the class 1 medical, smokers have as much right to be in the cockpit as anyone else. The same goes for obese people (I'm not one of them either, as it happens).
People can smoke if they wish, but I don't think they should be allowed a Class 1 medical. Smoking increases risk of cardiac arrest, and reduces time to LOC in a decompression.