What’s wrong with doing long division for fun?

I gave up trying to police people’s choice for fun. Let people watch baseball or ferret racing or whatnot.

Comically, I remember as a kid people telling me that reading a book was a waste of time. And asking why I would ever read something not assigned.

Someone will always think my thing is dumb. Someone is always smarter. Someone is always dumber.

So what. If it’s not harming themself or others, then I let it be.