Aside from the lack of brake lights, slowing through the box puts additional strain on the gear train (I seem to recall the Advanced Motorists cite this as a reason not to do it) and it causes unnecessary wear on the clutch plates - brake pads and disc/ drums are relatively speaking very cheap and easy to replace.
Agreed that it still has nothing to do with shit driving.
Aside from the lack of brake lights, slowing through the box puts additional strain on the gear train (I seem to recall the Advanced Motorists cite this as a reason not to do it) and it causes unnecessary wear on the clutch plates - brake pads and disc/ drums are relatively speaking very cheap and easy to replace.
Agreed that it still has nothing to do with shit driving.