Don't tear down your server just to have fun - setup a vm (or get one of those minipcs), call i "playground" and have fun there.

Redo your server after you've tried different things, and only if you feel like you found something that is worth it.

Experimenting with different distros can teach you a lot (especially if you try very different ones - mint and debian aren't that much different) and I do recommend you do it, just don't do it in production :)