Of course this guy has just celebrated his 28th birthday.
No, I'm being silly of course. It is hard to take the 5 minute claim too seriously I'll admit for just the reasons you state. Personally the financial implications of a pack a day and smelling of smoke are enough to stop me smoking.
I find the smell unpleasant when being around it so the thought of it going directly into my lungs is quite horrifying.
That's just my view. Some people may enjoy it but it's just not for me and never will be.