Why are the HP Prime and HP-35s so unpopular?

[Garth Wilson]

The Prime immediately turned me off when it came out. I hate touch screens, I have little use for graphics and no use for color, and color is always hard on battery life. I also don't want a proprietary battery that may not be available when it needs replacement years or decades down the road. I wish my 41 (which I use every day) used AAA cells like my 71 does; but at least the N cells are still available, even now after 40 years, even if not as cheap as AAA's.