Do you still use your GC and if so, why?
I still use mine to play my GC games (as opposed to the Wii) for several reasons:
1) The Gameboy player
2) The Wii's nasty habit of corrupting larger GC memory cards (even first-party ones) which I've been victim to before, although I deserve it somewhat for taking a risk despite the warnings I read online. To my knowledge, the problem has never been fixed in either firmware or hardware.
3) The more simplistic role and setup of the GC, versus Wii's cheesy interface (featuring multiple power modes that sometimes take longer than needed to initiate) and requiring that all games be loaded through the menu which will not allow you to gracefully exit a GC game via wiimote because Wii doesn't support it.