I'm not sure whether I'm missing something or you're missing something here!
In a race you're never really going to lightly coast with slight brake pressure like when driving on the road (ie slowing for lights) - on the road unless you're performing an emergency stop you should never have to really get near max braking performance, whereas in a race it's the other way around. Very few situations where you aren't using the maximum braking force, main caveat to that being when car stability is an issue.
Brakes aren't binary, unless you are using ABS smashing the brakes on as hard as possible is just going to lock you up, not to mention throw the weight of the car about and mess up the balance (which you mentioned).
Unless I'm missing something, I'm not always trying to brake "as hard as possible".