As dumb as it sounds, one of the reasons I don't use KDE is the ridiculous tendency of every app to have K in the name. Of course it's not the main reason, but I just don't get it. Do developers actually think it's cool or something? Does anyone?
There are still a few Gnome apps around with G in the name, but it doesn't stand out as much since G is much more common in the English language. It doesn't make it OK though.