Share 'How many gaming systems do we really need?'

With gaming systems from Nintendo, Microsoft and Sony serving as not just game consoles, but as multi-media storage devices and virtual athletic accessories...how do we decide which one we should buy? Or do we need them ALL in order to live a fully satisfied life? Do you Wii? Or are your an Xbox aficianado? Or are video games against your better moral judgement? Share your thoughts here.