@Linkat,
In the 80s there was a fad for Ametican Football on Channel 4, it lasted about two or three years. The rules seem very complicated, someone once tried explaining them to me but I just lost interest half way through.
That's probably how you feel about cricket, there's a lot of rules in that too.
American football seems more like Fugby than anything else. They mostly carry the ball in that too, but they're only allowed to throw back, never up the pitch, but they kick it a lot too. I just assumed there was kicking in American football too.
Soccer is short for Association Football, and it's success lies in having very simple rules and cheap equipment. All you need is a football, jumpers for goalposts and all that. That's why kids in the third world play it, they couldn't afford to play American Football.