I don't know, Donny...playing everything in "C" wouldn't be much fun...and that's why I play...that's also, I imagine, why it's called playing.

I like playing in different keys, and often, I'll transpose a tune in my head, just for the heck of it.

Of course, there's nothing wrong with "C" or "G"...it's just that I find playing in other keys makes me try different runs and keeps me from staying with the same old same old.

I played a lot of years without the luxury of a transposer, and I do like the option of using it, but not all the time.