I DJ,ed at many of the bigger nighter venues and most Promoters had spare heads / cartridge's for the decks so there was never a problem damaging the records , occasionally you would get someone tripping or accidentally knocking the decks but I have never to my knowledge have it damage a record . Never had a record stolen either.
Ive also match fished at the top level where my latest roach pole cost me £4500 Its a tool to catch fish, pushing it through brambles ,on barbed wire fences , Its there to be used just like the records are to be used to play the music
Steve