I never do it.
Why? I know better and don't like to abuse guns. Like has already been stated, guns are designed to perform under pretty specific parameters.
Anyone heard of "limp wristing" a 1911? How about "hot loaded" ammo?
I never do the "movie" thing, flicking a revolver cylinder into the frame either.
Keep doing it and you WILL loosen up and shorten the service life of your gun.
At the same time, thumbing the slide release on an empty gun once in a while will not kill it, neither will dropping the hammer since the 1911 has an inertial firing pin, the most that would happen might be a need for a new firing pin.
Norcs mmv.