re: Players shouldn't be able to leave early.

I share your frustration because I love college football and don't care much for the NFL. It sucks that a lot of time, energy and money is put into getting players and developing them, and then they leave early. Of course, it sucks really bad for the player who chooses to stay rather than go pro to get hurt and seriously limit their future career and financial situation.

But there is no easy answer. I guess the present system is best as it protects the interests and freedom of the individual player and the team can avoid some of the loss by good recruiting and development.