Reading this post and all the positive responses thus far makes me proud to be a member of this forum. Sometimes, being a hard-core ATGATT proponent is a lonely business. Not so here.
Face it, all of us like to think we're expert riders with good horse-sense. We have razor-sharp reflexes, we have 100% control of the bike, we pay 100% attention at all times. Surely, that Buick swapping lanes ahead knows we're here. We anticipate that little old lady pulling out of the Piggly Wiggly. We somehow sense that drunk driver in our lane around that blind corner ahead. We're vigilent, we're aware, we're omnipotent. Hell, if all else fails, we're lucky!
Sadly, not true. I've had a few 'graceless dismounts' of the unplanned variety in 40-odd years riding motorcycles, and I'll bet you have too. I'm grateful I had the gear each time. How about you? In my case, most of the wear and tear was to the gear, which is far more replaceable than the parts and pieces of my sorry old carcass. Of course, none of these incidents were in any way my fault...
Some of your friends may snicker when you pull on all that hot, restrictive gear before firing up for a ride, but I say let 'em snicker. Wear the gear!