I used to ride motorbikes, and thankfully had no serious injuries. I did have an accident with minor injuries - was going too fast through some road works, so completely my own fault. I ruined my gloves and boots, scratched my jacket and managed to keep my helmet from hitting the ground. If I had been wearing proper protective trousers I wouldn't have had to have a doctor picking gravel out of my knee and have a scar there to this day. I still rode after that, but ALWAYS had the proper gear, even if I was going a short distance.