I started out on Cinnamon (via Mint). Although I have used Ubuntu many moons ago but despised Gnome and never touched it since. After Mint In went to Arch where I DE hopped for many years. I tried XFCE (didn't like the visual inconsistences); Openbox - liked and loved for quite a while as a minimalist setup; Mate - too old looking so didn't last; Deepin - lasted a very long time because I loved it so much but eventually stopped because they changed the design too much to be link Windows; Budgie which lasted a little while and was the next closest to what Deep in provided. Was too immature at the time to be enjoyed long term; Pantheon - I still love Pantheon. It's consistent, polished and cohesive. To me a perfect blend of nice looking, minimal and functional. Stopped using because I got tired of having to fix it on Arch; Finally KDE. It's what I've been using for several years now because it just works, it looks nice, it's very customisable (I can make my desktop look similar to Pantheon), I like the integration and ecosystem of apps, it has great support and devs that listen.... I'm yet to have a DE tempt me away from it. Not even Cosmic lol.