Windows Vista completely died on my laptop back in 2009. I'd vaguely heard about this other OS called "Ubuntu" shortly before that seemed neat and was especially cool because it was free, but was too nervous about breaking my machine to try it before, but because it was already broken at that point, I had a friend burn me an ISO and installed it. I learned Ubuntu was actually Linux when I was configuring and learning how to use it, and that's when I learned about concepts like FOSS, Linux just being a kernel and not the whole OS, and the idea of Linux distros. The only time I looked back was dual booting a gaming PC with Windows 10 for a while just before Proton came on the scene. Even then, booting into Windows was rare, only for games that did not work on Linux at the time, which with Proton releasing and constantly improving, became even rarer as time went on. A failed distro upgrade last year (likely due to me messing around with Mesa driver versions) finally had me wipe the Windows side from that PC altogether and go back to only running Linux when I clean installed over both Windows and the other broken Linux install. Truly haven't looked back since.