I tried watching that last go around where the US did fairly well in it...game was about to be over and...OH wait...for no explainable reason, we're gonna add another 12 minutes to the game...
Actually, as an American football fan, I have to admit I think it's pretty entertaining.
In football, you have a visible clock. They stop it for out-of-bounds, incomplete passes, penalties, etc. When it gets down to zero? Game over.
In soccer, the refs keep track of how much time is spent on things like corner kicks, throw-ins, penalty kicks, and the like. So when the clock hits zero, that's when they announce how much time was spent.
It adds an entertaining element to the game--you have little idea how much extra time you're going to have (I'm sure the teams have someone who keeps track and guesses, but the typical fan won't). So it ain't over until it's over.
Besides...a "real" game of football has something like "Sudden Death"....
Actually, during the regular season, the NFL allows ties. They play one overtime period and if nobody scores (or they both score back-to-back field goals), it's a tie. There's been three of them in the last five years. In the playoffs, I believe they just keep doing overtime until both teams have touched the ball and somebody scores.
Soccer has ties in the regular season, I believe, but championship games play a couple of overtime matches and then shootouts until somebody wins.
I agree that I prefer watching American football, but soccer is pretty fun to watch as well.