My joy at the Cowboys 1-4 start is well-explained over at Deadspin. Discussing why people hate the Cowboys so much, they state:
A third of the teams in the league have won Super Bowls since the Cowboys last did, so they're not the unstoppable juggernaut who wins too damn much. The Packers were a mid-90s mini-dynasty who emerged from dark days to be lovable underdogs, so it's not as if historical trends dictate our rooting interests. Yet there's still plenty of hatred for Dallas.
You know why? Because they're the motherfucking Cowboys. You don't get to dominate a decade with an unlikable team of criminals, monopolize the Thanksgiving day game, have a prickly, senile drunk of an owner who should be a cartoon character, draft and promote a pretty-boy semi-celebrity as your quarterback, build a billion-dollar stadium in the middle of a recession as a monument to a legendary status to which only you subscribe, put a hole in the roof because you're convinced God likes your team, call yourself America's Team, have bandwagon fans around the country, and just generally be insufferable twats who genuinely believe you're some kind of institution that's bigger than the game, and not have the nation dance in the streets when you're piddling around in your own mediocrity.