RE: How much would you save?
I quit smoking when cigarettes went from 50 cents to 55 cents a pack. Even figuring only a dollar a day (I was blowing two packs a day into the wind) then I've saved close to $24,000 since. Since cigs are more like five bucks a pack now, I've actually saved a heckuva lot more than that!
Any way you figure it, it's more than enough to pay for my archery habit, so I don't even think about it.