Right. So when using a hand screwdriver, as presumably you must have done at some time or other in the past, you stopped turning the handle immediately the screwhead met the workpiece, did you ?
You never felt tempted at any time, maybe, to just give the screwdriver another quarter or half turn just to drive it fully home ?
Of course maybe you didn't. Which might help explain a lot of things.
Same as with all those stripped screwheads, maybe.