I'm using gnome shell and I love it. I moved to it from awesomewm, so that gives you an idea of the type of user that I am. They made some bold moves on UX, and I was surprised I was agreeing with them. There's a tiling wm extension, shellshape, that has advantages over awesome (!). I'm happy with the move. This is just to say that gnome is not targeting grandmas and teenager with their redesign. If you were used to gnome 2 desktop (which I hated) give 3 a serious try.