I generally try and keep to this but there has been the odd occasion when I've needed something for one specific job and was pretty sure I'd never use it again. In those cases I object to paying top dollar.
We had a shedload of turkey crowns left over from crimbo at work. Told to help ourselves. So I have six in the freezer. That's about forty kilos of turkey. I see a lot of curry and sarnies in my future.
I thought parking sensors worked by bouncing a beam off the object behind you. Surely there would be nothing to bounce off backing up to a cliff and you'd plummet to a horrible, fiery death.