Not enough mindless slaughter for my liking
Of course it's all down to what games you prefer, who it's for etc. I have a lot of games on my 360 that I wouldn't allow my kids to play (as they are living in Rome I don't think this will be a problem though) such as Kane and Lynch Deadmen, Condemned etc but as I'm one that prefers such games as well as RPG's and Strategy games the games Wii has to offer would never interest me. As I said though if I was round at a friends house at a party or whatever and a bunch of people were playing some sports game I'd probably join in but would never have one in my house unless I had kids living with me that might use it.