Here's my rundown. Say you've lowered the car and exented the lca's or whatever to achieve some "sweet" camber. A bi-product of that steering geometry change is increased effort to steer your car. That effort does take it's toll on the internals of your steering box if you leave it unbraced, it will still wear out eventually though even with a secure brace. The point is there's no point needlessly breaking things.
booya!
also, you looka t your steering box when someones' trying to reef it when the car is stationary, kinda disturbing