The controls are put there to use to their full extent when appropriate.
Try watching an experienced float plane pilot working the elevators in rough water - stop to stop to maintain the optimum planing angle through the water. Crosswind takeoffs on floats require use of full aileron to prevent the into wind wing from lifting - especially in rough water. Allow the into wind to lift too far, the aircraft to drift downwind and encounter the wrong cross swell and you risk a dynamic rollover similar to a helicopter.
Whilst I don't fly the big stuff, the principles are the same. And before anyone suggests otherwise the 208 I fly does have roll spoilers in addition to ailerons.