For me it’s no doubt ‘Spotify’. Hilarious loading times and lack of functions, in my case for podcast and audio books, which are standard for years in FOSS-players like AntennaPod.

At work: without a hint of hesitation, Microsoft Teams and Visual Studio. Do I really need to explain the issues with Teams? As for Visual Studio: extremely slow startup time, idiotic msvc compiler, yappy copilot who won’t shut up, needlessly opaque “solution” format, moronic intellisense false positives, anything useful being hidden between layers of sloppy menus, and more… I have my own build scripts, compile with clang, and edit with whatever. I only use that piece of shit to debug and when it’s time to commit, to make sure it’ll work on my colleagues’ environments, as I don’t want to be the annoying contrarian, but it really bums me out. On my personal machines: gnome. I have a love hate relationship with Gnome, because on the one hand, I agree with most design decisions and appreciate not having to spend any time configuring a lot of stuff, so it suits me very well, and on the other hand I get angry on the odd occurrence where I disagree with the philosophy and I have to install an extension which I know will break at every update.