I'm going to get myself a gamecube even though one was already given to me as a gift
Why would you get two gamecubes?
I want to play smash bros on it
It might be strange to get 2 of the same gaming systems. You should make sure your bills are paid before buying a second of something you already own.
I want to be a collector and I just want another one.
If you enjoy collecting consoles then I don't think there is anything wrong with that.