Got a pair of chaps last year, after 17+ years of running a chain saw without issue. Within 4 uses..., yep, they now have nice little slash on them. So...did I get more relaxed wearing them? (And no; no alcoholic beverages were involved. I hope everybody knows the comments above are a joke right?!) Or, my theory is they are much thicker over winter pants, that the chain would of never nicked them if I didn't have them on. Yep, that's my story and I'm sticking with it! But seriously, it's doesn't "hurt" to wear them. For me, that time when the chain "made contact" and another (when chain wasn't spinning), showed me one of my worst habits is when I pull the saw out to walk elsewhere and I swing the bar vertical and close to my knee, but saw revs might still be spinning down. Fixing your bad habits is easy, learning what they are is not.