I get it… it’s definitely easier for me to use a dedicated piece of hardware with lots of buttons that never move or change shape. It makes things faster when you get that muscle memory going for fast calculations and for testing. I’ve been out of school for a long time, and despite a laptop with Mathematica, an iPad, an iPhone… the whole bunch, my favorite calculator is still the HP-35S. I got into the whole RPN thing in college to save time, but I rarely need a graphing calculator anymore. That thing’s got me covered, and as excellent of a program as it is, using PCalc is definitely a step down when I’m doing lots of calculating.
All that being said, the thing needs a high-res (not even color! just make it easier to look at!) LCD display. There’s just no excuse at the volumes they’re producing.