[user104658]

Originally Posted by Alf

When does this happen? I've smoked everyday for the past 30 years (that's more than a quarter of a century) and I haven't been killed.

My dad started smoking when he was 13, stopped when he was 55 and he's now 66 - his lungs are ****ed and it'll probably finish him off by his early 70's.

So my answer to your question would be; "Not usually that young but it'll probably get'cha in the end, and if you've been doing it long enough, it might be too late to stop anyway".

I do of course know people who smoked life-long and died well into their 80's of non-related things. So it doesn't kill everyone... ... ... just lots of people,