Yep, it's amazing what that little stick can make the plane do

In all seriousness, the competition level guys use the rudder as much as all of the other control surfaces and the sport guys I know use for all the same reasons as the comp guys which is basiclly better control and as already mentioned there is a host of advnced maneuvers that require the rudder to be used. I'm a person that does both

Knife Edge Flight
Stall Turns (Also known as Hammerheads)
Snap rolls
Any straight vertical climb where you are at full power and the plane is slowing since torque will want to make the plane start to yaw to the left unless you have trimmed the plane by adding right engine thrust

I could go on and on