Hi,
Full time linux user here. I moved away from windows almost completely, with a few exceptions such as school work, a few weeks ago, and have not looked back since. Primarily, I realized that all of the things I needed to do could be done in linux anyway, and most of the stuff I'd been spoiled with in windows I could do without, for example TWBlue and the variety of NVDA addons I'd become accustomed to. Besides that, though, perhaps I just wanted something new? I'd been using linux for a long time prior to this anyway, had had it on a spare laptop of mine since May / April this year, and had been using the linux command line on servers for even longer. I'd say that, knowing the CLI as well as I did starting out, probably gave me a huge advantage.
Am also an ubuntu mate user, specifically accessible coconut, though I've been considering going the arch way because of audiogame manager, among other things. It seems to have a lot more of the stuff I need starting out, for example lib32 gstreamer plugins, which I'm having a stupidly hard time finding on ubuntu.