Once needed 11 stiches in my hand, sliced by a jagged bean-tin edge when I was trying to open it with a worn-out can-opener.
One place I am VERY careful is in my workshop though. One or two of my machines would have your fingers off and eat them for breakfast before you can say Oops!, if you are careless with them.
I had an angle-grinder pull itself out my hands when the disc caught on the edge of the steelwork I was cutting up. That was frightening, and the smaller type, not the big ones builders use for cutting paving-slabs. I have used one of those larger ones, once, but never wanted to use one since. They are big and heavy, very powerful brutes for use held in the hands.