I've also been linux as my main OS for personal desktop use since college early 2000's, but I have had to use windows sometimes over that time, due to some previous employer mandates. I currently use Xubuntu. Xubuntu could be greatly improved by shipping with Libre Office and Audacious (why not ship with the best software?). I liked older versions of gnome, and I have found KDE to be usually have issues from being overly ambitious, and often they fall short. Both of them seem to want to write their own versions of every tool, it is a huge waste of resources.
At the time of writing this I am watching HULU on my system76 machine. The performance is great, and they cost much less then equivalent apple products. Linux desktop's Video, security, audio, speed, reliability and cosmetics are all as good or better in my estimation than PC or MAC equivalents, in the same price range. Ubuntu's updates are pretty painless these days. Open/Libre office is probably the weakest point, but it is workable. Most people I interact with have been moving to Google docs, as keeping multiple version of spreadsheet is a pain. I'd use it if was worse, because of freedom. My only complaint about the machine is that it has an apple style touch pad. For usability, I STRONGLY prefer separate buttons.