Just a little common respect for the other guy, and the gym it's self, when racking or stripping a bar. Kind of lost these day's, too bad. Like some guy's are use to their mothers picking up after them, so they just walk away. Wonder if they bother to wipe their asses, or wait for mom to do that also.
With liability insurance so high for gym owner you would think "Return Weight" signs would be all around the place. Trip on a DB or lying plate, tear ligaments, and than sue the owner for whatever he's got, may not be the best outcome for an owner who has invested everything he has, or will have, in his dream of running a gym.
Bones: that is the secret Weider Principle. All Weider MR O's have used that in underground training rooms. Keep it quite...OK.