I use my calculator for household and at work
But kids need to learn basic math in their heads, at least on paper they need it for their development. For logic etc
They get to college and their engineering scholarship gets taken away. The jig is up. They can’t do math. I’ve seen it.
The people in good programs, their parents would not allow calculators.
I’m an old fart. I learned math before there were calculators. Probably better off for it. First calculator I bought was for converting hexadecimal to decimal, and vice-versa when I was an assembler programmer. I could do it with pencil and paper, but that took too much time on the job.