No, I haven't and have no plans to go to any. I simply hate crowds of that size and the traffic jams before and afterwards. Always have. We have a group of friends who feel the same so we alternate hosting parties before and during each home and away game. Sort of, At Home Tailgaiting. :) Lots of TVs set up, plenty of great food, good company and no traffic hassles. For me, its a much better way to enjoy the game.
Of course, for really big games, like bowl games, when I often have access to skyboxes I find a way to amend my way of thinking. LOL