Yea that makes sense. I've been curious about Arch given how many resources there are for learning it. Weirdly enough I know two people who have tried it, one said it was the easiest setup they've ever done and the other said it bricked their laptop.
Most distros really aren’t too different fundamentally, so if you’re happy where you are there isn’t much reason to switch. It can be fun to swap just to see what’s different (and learn what differences are really just skin deep), but you don’t have to. Some distros have more big ideas behind them which can be interesting (like nixos) but mostly they all feel pretty similar.
Because you're arbitrarily restricting yourself to old versions of tools and software. The idea is you don't want unexpected conflicts to bring down your system. But, what that means is when you do go to upgrade on something like a server, you would test the whole thing on the new version, and then migrate. That's not how people use desktops. You just feel like one day upgrading from 20.04 to 20.10, and then get a massive burst of differences. It's really hard to pin down what specifically goes wrong when something does.
So unless you have a staging environment for your desktop where you test the new version before migrating, then what is the purpose of running old versions of stuff?