I’ll go first, I took my mom’s college textbooks which came with discs for a couple distros and failed to install RHEL before managing to get Fedora Core 4 working. The first desktop environment I used was KDE and despite trying out a few others over the years I always come back to plasma. Due to being like 12, I wanted to run my games on it, and man wine was not nearly as easy to use (or as good) as it is nowadays. So I switched back to windows until around 2015 or so when I spent the next few years trying to replace windows as much as I could. Once valve released proton, I switched fully and have t looked back, unless my still there windows partition tries to take over my computer when I restart it at least.
94 my uni used HP-ux work stations. So many of us set up Linux on a home machine. Slackware at the time. I was forced to dual boot through most of my uni time. As many needed programs just did not have viable candidates on linux. But by 2000 I found windows annoying and rarely needed to use it. Was likely about 2005 before I stopped installing windows all together. But even now. I have a cheap mini PC with win 11. It is used rarely. But photography and ham radio being my main hobbies. I find many Chinese products have 0 linux option for upgrading firmware or some other configuration option. So keep a mini pc just for that.