I thought this was only me! For me, my dad was self employed as an "accountant" of sorts, and specialized in what might be called forensic accounting of Medicare reimbursements. He dragged 12 year old me into hospital data processing centers at 3am to print records so he could do his work.
In this case, he had a certain amount of records to print in the time allotted, and he needed two operators to make the window. I learned a lot of useless knowledge about which medical procedures qualify for extra reimbursement for Medicare, and also what Sunset Park, Queens looked like at 3am. Nothing really useful in life.
I think if my dad had hired someone and let me sleep and play on the computer instead, that probably would have turned out better for me.