Having the bug fixed is a *huge* win for users. It means that I don't have to worry about, "If I apt-get upgrade, maybe something I rely on will stop working." By definition, bugs that are already there aren't stopping me from getting my work done.
I'll agree that it'd be nice to see more bugs fixed, but I'm much more keen on avoiding new bugs being introduced. e.g. it was really annoying when ubuntu unity stopped working with the trackpad on my wife's laptop. It still works in gnome, xfce, etc. But having to switch desktop environments in order to restore previous functionality is a royal pain. Instead she just carries a mouse around everywhere.