The first major casualty was the Pacific Athletic Conference. ACC will follow soon.
If the game is entertaining or if it is a school I have an interest in then I will watch. The one rivalry game that I always watch is the Saturday night USC versus Norte Dame game.
I like that in each conference, there were rivalries like Oregon vs Oregon St, UCLA vs USC, etc. Now that PAC is gone, you're not going to see rivalries like that anymore.
We still have the PAC2 with Washington State and Oregon State. Nice little small microconference.