Originally Posted by splck

Fair point, but it'll have to be quite a hit in order to do the damage you're talking about (at least on my truck) and the car would hit the hidden hitch even if the drop weren’t there. The reason I leave my drop hitch on is more for people hitting it while parking than a high speed hit and to act a "feeler" while backing up against concrete walls.
It's also good for a laugh when friends whack their shins on it