You are as arrogant as you are ignorant. It was not a secondary matchmaking tool in the older CODs, SBMM matched you as it does not then gave hosting to the person with the best connection, if you had bad internet you'd still have a bad connection as you do now, without it casual would be an unplayable mess where every game goes poorly with you either getting stomped or doing the stomping, there's no fun or progression in that, thats one of the main reasons CoD was the winner of the 360/PS3 FPS wars.