I've used linux exclusively since the mid-1990s so by now suppose I'm pretty much used to the program quirks that I barely notice. (Except glitchy clipboard, I'd definitely donate fixing that under Gnome, so that it works at least as well as the KDE one). But otherwise besides the graphics stuff my demands on my computer are very modest. Mostly I need a decent browser, email, emacs for a text editor, a decent media player and every now and then a word processor for writing some letter. So my frustrations mostly happen in the rare instances when I can afford some new hardware and it doesn't work right away, or a few times not at all.