Smoking Considered Productive

It came to me recently that if you smoke, you can achieve more boring tasks. Merely chainsmoking the cigarette or cigar means time passes more smoothly, because you're in a constant state of euphoria.

So what about other drugs? Alcohol has the problem that it destroys brain cells, amphetamines can cause serious problems, but tobacco or nicotine only has problems much later.

I'm not condoning it, and I don't smoke, but I think tobacco is why the British Empire grew so big.