Baseball, hockey, and even basketball cannot be compared to the sport of football. Football is much more of a physical and full contact sport. The reason the games have been shortened to 16 games, at least for the moment has to do with the players. The fact is, injuries happen in every sport. But when you are coming into physical contact as much as the players in the sport of football do, then you are more likely to grow tired, and suffer from more injuries. Lets just say you lengthened the football season to 30 or 40 games. With the amount of physical contact each week and in each game, the players would be good for nothing. You have to give players a break to rehab from injuries, get ready for the off-season, training camp, and even the preseason. My point is, players need the proper rest in this sport. Also there is the issue of players playing worn out which can cause the fans to be deterred from watching the games more intently. What I mean is, if you have players that are on the field not playing at a high level because they aren't healthy, then you have fans that walk away disappointed because the players could not give their 100% each game.