- Long term "Savings account" - a volatile one, of course - I buy stuff from online with it, household items (In country I live you can basically buy anything with BTC) - Travel, I book hotels/flight with it and once I rented a boat for a family trip

In addition to that I now and then try to pay with Bitcoins at other stores. Last time got excited about boltcards (https://github.com/boltcard/boltcard) there are few places in my country which accept it, but it is quite a new thing.

What country is that, if you don't mind sharing? It's the first time I hear this

I suspect one whose own banking system is on par with BTC risk-wise. (Apologies to gp if that was clueless, it just comes to mind first.)

You may not ;)

Buying MDMA safely. This isn't a joke. Drug prohibition causes harm, crypto provides a much safer way to obtain psychedelics. If all your purchases are safe for the state to be aware of, good for you.

It seems insane to me people would buy/sell drugs in a prohibition nation on a public ledger.

For whatever it's worth, the federal authorities have very little budget/mandate to prosecute darknet drug distribution offenses. They go after the darknet markets themselves, money laundering / sanctions avoidance and maybe firearms.

Meanwhile the local authorities don't know what most of those words mean.

Monero