I don't have to do anything punching of the paper and making sure they are all aligned and neat when I do the punching. When I am doing the organizing this is a real plus for me. Yes I may pay a little bit more for the holes being there and straight for me but it saves me an enormous amount of time and time is expensive.
I have regular paper. but having the 3 hole punched paper made my life so much easier and removed the step of trying to find my hole puncher and trying to make sure that the holes align between batches of pages.