Wii fans:
They're only hurting themselves! They'll lose more money elsewhere because of sky high development costs! Wii is the way to go!
PS3/360 fans:
Anything not Nintendo sells like crap on Wii! Just makes games for ps3/360! It's the obvious choice!
Reality:
This gen is not like last gen. Last gen developers could focus all their efforts on one primary platform, occasionally porting to others for some extra cash. This gen a choice has to be made, and it isn't an easy decision in the slightest. Developers more often than not are losing out on both sides of the fence because of a split market, and it seems that most of the big publishers are choosing to stick with what they know rather than charting new territory with the Wii.