> The problem is smoking feels the same wiether 1 person is doing it or 1 million people do it

Smoking also requires millions of people doing it to work. You need enough consumers so that the manufacture of cigarettes is viable, and both acquiring the habit and continuing it are highly dependent on the number of smokers that you surround yourself with.

It would be very difficult to be the only smoker in a large enough community of non-smokers.