Not knowing how anything works, being scared by errors that you don’t know how to get around or deal with, not knowing alternatives for your former favourite apps to do things quickly, wondering if you get the peripherals you currently own to run?
naah thanks mate, hard pass.
Tossing Gentoo onto an old Pentium III box, typing emerge world and coming back four hours later to see if it’s done was awesome.
And no, it wasn’t done compiling KDE yet.
But I definitely wouldn’t want to experiment with Linux on my only PC with no way to look things up if I break networking (or the whole system). Thankfully, this is no longer an issue in the age of smartphones.