I started with an Apple II ... must have been around 1985-6. Then Macintosh. Then, due to the multimedia company I started working for, Windows. Then as Apple was imploding in the 90s, stayed around Windows (all this time I was coding C++). Around this time discovered Linux.
Then Steve came back and several years later moved back to macOS. Kept playing with Linux and FreeBSD, but for the most part was on a MacBook Pro until about three years ago when I decided to do System76. I mostly am writing code, and since I use Docker a fair amount, it just makes sense to be on Linux.
Desktop environments have really come a long way. I am mostly on either KDE Plasma (on Arch) or Pop!_OS with its default GMOME-ish DE.
It'll be interesting to see the final COSMIC desktop.