While fanning SA guns will wear out the action faster than 'normal' modes of fire, it can be done safely and relatively accurately if you practice. It's like any other skill in that sense. Your choice to do this or not is really determined by your ability to pay for repairs/new guns.
Another technique is 'slip-firing'. IIRC, you hold the trigger down, pulling hammer back with your thumb and letting thumb slip off the hammer at the rear, repeating this process rapidly.
All of this, and more, is covered in Ed McGivern's Fast and Fancy Revolver Shooting, my copy of which is by New Win Publishing, 1984. Still in print, to the best of my knowledge.
McGivern pretty much thrashed all this out a long time ago.