The gear is not being abused, there are service weapons out their with several thousand round on top several thousand dry fire pulls on them. Of the 30 M9s I "own" I have had 3 go dead lined for bent spring guides, 1 for mouse trap trigger return spring going out, but never for a broken firing pin. The same can be said for M16s, in the recruit depots, they have hundreds of thousands of dry fires on them, without the pin failing. The 116 I "own" all have several thousand dry fire pulls on them, and they all seem to work. If the weapons/firing pin is so fragile to go out from dry firing, it would last very long under the dynamic action of firing the weapon.
I honestly think snap caps are a boondoogle to get just a little more money from people. Most weapons don't need them, and the military has been snapping in with center fire weapons without them since at least the M1903 with no adverse effect to the weapon.