Smokers at least, and im sure it would also apply to alcohol abusers, actually costs less money because they die much faster and easier (conveniently usually just before retirement age), they are offered less health treatment options overall because of their smoking, and they miss out on the most expensive healthcare, old age care when you need two hips, two knees, and 30 medications a day.

The idea that smokers cost money to take care of is pure myth, and in most places they end up paying more in sin taxes to the state than they receive for life medical care costs.