I totally agree. I used to be a more-hardcore gamer but as I've gotten older & started a family (I have a 7 year old daughter and 6 month old twins), I am starting to graduate to the casual games. I have an xbox360 which I bought primarily to play the rockband games. I also have games such as Call of Duty, The Force Unleashed, Grand Theft Auto, Bioshock, etc.
None of those games are appropriate for for my 7-year old. I'm looking for some games we can play together and it's been difficult. I've found a few casual games (Worms Armageddon, for example) but for the most part, it's still pretty much hardcore games.
I don't want to have to invest in another console just for casual games, but it's starting to look like I don't have a lot of choice...