Wii Cannot Decide

Well I admit to being confused. I am a gamer and gaming things interest me. As much as I hate to admit it, I like how the Wii plays on video. But I'd also like to upgrade my old computer and make it a more capable gaming device to multiplay with my 9yo daughter.

Maria/Lupe, my eldest, wants a Wii. She says so because it's a casual game system that features controls you move around (not buttons you press - as much), supports four players (a magic number at our house) and doesn't cost a fortune (initially).

I told her that my friend Kevin advised I upgrade my old gaming rig (now my wife's PC, and Maria's multiplayer gaming platform) and she said "I don't mean to be rude, but Kevin thinks everyone enjoys what he does."

Actually he doesn't, but she's right that his advice is colored by that. I concede to his point: a PC can do loads of things. However, every time I come home and my baby boy feels left out, or my 2nd and 3rd daughter, I feel like a jerk every time I think about spending a few hundred dollars on something exactly one in four children can enjoy.

On the other hand, I hate consoles for their cyclical games and high-upkeep costs, and as a gamer things like graphics matter to me, not just visually but spacially. Now that I have experienced Operation Flashpoint and (more famous) Morrowind and Oblivion, I want more of these open games. Can the Wii's hardware deliver? If it's a toy for my kids (like their two GBA's) will it matter?

Wii are, as of yet, undecided. All that I know is a PS3 is just too expensive for too little gain.