Personally, I don't have problem if they're on the left. I use MAC already (not so often). So I moved the buttons to GNOME-Shell (that I use everyday). How I did it?
1. Open dconf (for openSUSE users, you can install it using the ymp file if you use openSUSE 12.3).
2. Go to gnome>shell>overrides and change the default value of button-layout from :close to close,maximize,minimize:menu and the buttons will move.