Someone mentioned picking out the fibers from the saw after catching one's chaps. Consider the other end: Picking out wood chips, sawdust and specks of oil, dirt, blue jean material and other debris out of a ragged cut on the thigh is a long, laborious, painstaking, tedious, exacting job. And that comes after the fluid replacement, the bleeding control, the call to the OR staff (country hospital isn't on duty all the time), to come in and prep the room, getting the blood type and cross match, and the Anesthetist to get the patient gassed down. If the patient has bled out a significant amount, all that is on hold until stabilized or dead. Transportation is often by pick-up truck, with no prehospital care, from deep in the woods. It is a fricken mess. Irrigation of the wound, as in a car or motorcycle wreck doesn't work as well, since everything in the ragged laceration is oily/greasy.
I don't have hundreds of gallons of saw mix through a saw, since I only cut my own firewood, rather than making a living at it, but I wore the chaps, had the helmet, and face guard, and wore gloves and eye pro/hearing pro. Since my kids helped, I left them in the truck, parked well beyond fall range. Never had a nick, or other injury, and burned 11-20 cords per year. cut all morning, swim in a lake with the kids to clean up. Big lunch under the trees, easy drive home.