Or if someone "taps" you in a parking lot, the brushguard could wiggle over and do some damage to your: hood, grill, bumper, and fenders.

There is a story here somewhere about a guy who was off-roading in the snow and he ran into a rock that was about knee high. Normally, the rock would have dented his bumper. But this guy had a brushguard and so the forces of the crash were transfered to his hood, grill, and fenders. One of his fenders was damaged so much, that he even had trouble opening his driver door.

Damage with brushguard:
new hood, new fenders, new grill, fix door, brushguard brokem

potential damage without brushguard:
dent in bumper.

Do the math on what his repair bill was WITH the brushguard and compare with what his repair bill could have been without a brushguard.