My dad was a smoker most of his life. He quit in his 50s. Years later I asked him if he missed it, and his answer was "every single day."
I quit smoking for love, but I miss it every time I think of it. Nonsmokers have no idea what they're missing. It's sheer bliss. The sooner we can figure out how to have noncarcinogenic smoke, the better.
Personally I would still never smoke, if nothing else because I've had to clean out the tar and gunk from old televisions and stuff. That shit is nasty.
They hardly drank(liquor) and it was their ownly vice, knowing it's still bad for them but could be doing worse.
How is that different from failing to quit?