I don't think you gave the game a chance! I've brought it and its a great little game, unless you don't like chilled out gameplay and want to kill things constantly.
The music suits the gameplay and theres tons of tracks to unlock. The graphics aren't ground breaking but they are very clean and crisp and no way look like ps1 games, its easily on par with the other wii games and I think its graphically prettier then monkey ball
Each to their own I guess, but I've racked up about 7 hours on it so far, currently playing on mirror mode, and loved every second of it!