My mother asked me the other day "does $LocalGroceryStore still take cash?"
I looked at her like she had five heads and said, "yes"
About the "nobody can take your money" part.
Etherium Classic exists because somebody hacked an extremely valuable wallet and funneled 13% of all eth into their wallet. The people who control the mining pools, (rich assholes) wanted that transaction reversed, so they hard forked. Classic is the main fork that didn't reverse that transaction. It's much less popular, despite being run by people who are demonstrably more principled.
Paraphrased from Dan Olson's video "line goes up" about crypto's history and affect on the world. Spoiler: it's a scam, and a tool for the wealthy to get even richer. Computing power can be bought with dollars.
A friend of mine was actually kinda impressed that his 2 year old opened a locked door, walked down to the gas station and tried to get a candy bar, at 2am. Obviously the cashier called 911, kid was fine.