It's the nails of my left hand that suffer most, as even when cut really short, they grow right down to the end of my fingers, so the strings cut chips and notches in them. I let my right hand nails grow a bit longer, so that I can finger-pick with them, but no additional extras! I did get a collection of pits in my right thumbnail after too much un-guarded thumb- picking!
Probably toldu this story before, which came from Tony McManus: after he moved to Canada, went to a nail parlour, run by Vietnamese nail artists: they could not understand why he only wanted his right hand nails done. He thought he'd finally got through to them, when they asked "You want toenails done?"