Find me a box of matches or a lighter. And no, you may not light them from campfires or the flamer. Then we may talk.
you could get lung cancer
Distinctive lighter. It's part of the quest to get back at Benny.
You could always chew tobacco instead.
If you're going to run across a desert for days carrying 200 lbs of guns and sarsaparilla without getting winded, you better not be smoking. It's probably just something they couldn't find a use for, I doubt it was overly PC concerns since you can still get simultaneously drunk and high while visiting hookers.
Light yourself on fire using an Incinerator. You'll start smoking then.
In F3 your companions would smoke if given cigarettes