I know plenty of guys who would probably be better off not smoking tons of weed but then again, if they weren't smoking pot they would probably have psoriasis of the liver from alcohol. I'm on disability from a nasty forklift accident that basically tore my left knee to shreds. If it wasn't for pot, I would be using the strongest pharmacutical pain killers 24/7.

But back to your original question, it depends on the person. Some people are just lazy and use pot as n excuse.