Sad but true.When leaving my bike, loosened quick-release axles are my biggest worries.
I have a locking gas cap. If not, I'd be worrying about someone pouring Coke into the tank.
Ditto:Was worried the first time I used quick release. I had doubts since I had not experienced them with a motorized bicycle before. But that was years ago and I have never had a problem and I don't know of anyone who has.