Because now it's in all of our own best interests to nag, cajole, and browbeat those who take unnecessary health risks. I don't just mean smokers. Eat too much? You need counseling and mayhaps a fine. Extreme sports injury? Sorry sky-diving, rock climbing, long distance running, swimming in the ocean, bicycling, hiking, camping
The DEM/PUB hype machine will be happy to step up, pretend to argue about what the penalties and restrictions should be, performing yet another "Good Cop Bad Cop" routine for the TV cameras, to convince us that all we need is to pass this one small additional law, and give them that much more power.
Rince Lather Repeat