I didn't have a calculator until my senior year of highschool. But since we weren't alliwed to use them in tests, I didn't feel like I was missing anything.

As an engineering student at CMU, I had an HP 15c like everyone else. A few years back when I found out they are coveted, I sold mine on ebay. I have an emulator on my phone.

I assume that calculators will continue to evolve and that my grandchildren will have a Propædeutic Enchiridion.