I used to smoke 2 packs a day, plus an average of 5 pipefulls of my own private blend tobbacco and 3 or 4 numero 5 macanudo cigars. Quit cold turkey 26 years ago, right before I got married.
Have never regretted that decision.
And no, I am not going to pontificate on the pro's (THERE ARE NONE) and con's (LOTS) of smoking.
Suffice to say that smoking (tobbaco and other leafy shit) is bad for the health, all living things, stinks furniture, makes one reel in the morning when u smell your mate's sewer-like mouth aroma or your mate's smelling yours, sticks to clothing and generally is a dumb ass thing to do.
Nuff said from my side.