I was hoping someone would mention how it reduces the chances of getting a performance award from any LEOs. I was increasingly finding that on my ST1100 I just could not resist the temptation to go WAYYYY over the speed limit whenever it seemed possible and relatively safe to do so (i.e., on relatively straight, flat roads with little traffic). Because you're "playing with" the throttle all the time on any bike without cruise, there's a constant temptation. Otherwise, for me, it becomes painful to maintain the speed limit when there seems no real reason to do so.
Problem is, you just never know when a Smokey may come around the next bend, over the next rise or down the next intersectiong road.
So I'm hoping that in those situations the cruise will allow me to set a speed that is safe from the LEOs and that will remove the temptation to some extent. I can't explain how the psychology of the thing works, but I know from my cars that it does. When it's set on cruise, it seems somehow more bearable to stick to 62 mph than when it's not on cruise.
Or is this just me?