One advantage of e-cigs is that people can lower the nicotine in e-cigs over six months to a year, and eventually even quit. I guess they could theoretically do

One advantage of e-cigs is that people can lower the nicotine in e-cigs over six months to a year, and eventually even quit. I guess they could theoretically do this with cigarettes, too, but nobody actually does that. Also it may help that you can still smoke for a while on 0% nicotine, just to replicate the action of smoking, but without any nicotine. But at that point you should already be able to quit completely.