[youainti]

I grew up using HP RPN calculators and it was actually easier in the long run. It isn't in the keystrokes either, but because when I was calculating an algebraic expression, I would have to setup a "query plan" in my head on how I would input all the values and then often I could simplify things as I entered them. I got rather good at manipulating algebraic expressions as a result, and it served me well in college.