The most infuriating thing to me about football (which certainly carries over to other sports) is that there's not necessarily one strategy that's the sole path to success. There are a ton of approaches to the game that will work as long as you have the right pieces in place. Everything works in theory. It's in the practice of those approaches where things go awry.
To me my biggest annoyances about gridiron football is the fact that there's so much dead time when nothing is going on but guys standing around (60 minutes of time in the game, approx 13 minutes of actual time the ball is in play), the season being so bloody short, and the fact that there are a lot of things built into the game to artificially raise the suspense, like allowing the QB to spike the ball sto stop the clock (IMHO should be intentional grounding). To me, it poses more like sports entertainment, when there show and suspense are bigger than the game. Hence my comparing it to the WWE (or even the XFL--if you remember that)
With the exception of Baseball, every other sport I've followed at least somewhat at sometime in my life--Basketball, Ice Hockey, Box Lacrosse, Aussie Rules, Rugby Union, etc. the game time is as advertised--the game is in play for whoerver long the clock states. You got 48 minutes (I believe) in basketball, 60 in hockey, 60 minutes for Box Lacrosse, 80 mins for Rugby, 80 for Aussie rules, and 90 for Football (soccer). Baseball has no time limit, but it also advertises itself as a pastime. I don't think anyone every goes to a baseball game excpeting hard action and them selling you the entire seat but only needing the edge.
But hey, that's just my opinion. Everyone has different tastes. During the world cup half of my freinds (mostly americans) continued to blither on about soccer and how much it sucks. The other half of my freinds (mostly europeans), were blathering on about how much better soccer was than gridiron football. Some of my other friends say ice hockey's too difficult to learn, and others just say WTF! at Rugby or Aussie Rules.