The difference between owning an XBox 360 and owning a Wii is a little like the difference between carebears and PvPers in MMOs I think. They exist in the same space, but I for one just CANNOT understand gankers and people who play on PvP servers. I guess the feeling's mutual since sometimes they look at me as if I'm something less than a gamer at times. More important to me is lots of crafter items, flavor content, storyline I can play through, PvE events, holidays, farmable items, and empty houses for RP use...
Likewise, with the XBox 360, I simply don't want voice chat, nor do I care at all for high-score leaderboards. I want a good and easy online experience, that's for sure, but just as a matter of aesthetics and convenience and not as a matter of power-features.
Glad to hear that you're enjoying your XBox 360 Mashiro! Is it true what they say about COD IV being better than Halo III though?