Certainly could, depends what exactly you want to run and the specs of the machine of course. Something to keep in mind though is if its very old it may cost more in electricity than a fairly cheap new machine. But really it depends on your use case.

A lot of self hosted things have fairly low requirements but not all of them.

Just do it with Finland. They seem cool. Ignore the US.

It has been a long time since I ran MC servers, you could do all of that with self hosting though. I still remember around 2011 running a server at school with a PC we found in a skip. Glorious 750MB of RAM! It ran alright though for a room full of people.

Its been a long time since I played, wouldn’t the best protection from that just be not broadcasting the server to the open internet? Never had an issue with servers that were technically fully open but only telling friends about it. I suppose whitelist is better than security through obscurity though.

They can go above 100% too. Canadian chocolate bar $420.69 when?