Little known fact-- the field goal used to be a soccer goal and was the only way to score in college football before the advent of the touchdown. Teams would park dozens of players, sometimes hundreds, in front of the goal to make it impossible to score. In those days, there were no limits to the amount of players who be be on each side, and the home team usually had a massive advantage. That's why the posts were added to the corner of the soccer goal, and why you still see the dual purpose field goal / soccer goals used by some high schools. So that teams couldn't just block the net with bodies, you'd have to lock it over them to score.