Those were probably the best reasons ever to shout at your mom, like srsly. =P
You know, you could have kept it for your bro? Or you could have played some of the exclusives this Christmas? Like Gears of War 2 and Fable 2? Best of both world I say (like your mom said as well).
Yep, you are ungrateful.
Random game thought :
Why is Bionic Commando Rearmed 2 getting so much hate? We finally get a real game and they're not even satisfied... I'm starting to hate the gaming community so f****** much...