When you think of what the NFL would actually be like without Tom Brady or
Aaron Rodgers, you think of what it's like without Peyton and Eli Manning, and now Drew Brees, and you look at how dominant Tom Brady has become without them around. The same thing would likely happen with younger quarterbacks if Tom Brady or
Aaron Rodgers left today, as long as there is no stabilizing force to keep things balanced, you would have just one guy, one name, and you would forget all that came before him (the Joe Montana's, Dan Marino's, and some of the guys before them), and everyone else around him. That isn't always
the good thing people think it would be if they actually made it happen, change doesn't always make things better/stronger, sometimes things were as good as they were going to get, then they weaken or break after the change is made in a way they wouldn't have if they had been left alone.
The people that focus on new vs. old with the NFL or
anything else don't get it. There's always going to be some people leaving and some people arriving, as with anything, but a lot of times a person's
popularity doesn't peak until they are gone, that's when they are appreciated. Not just people, but also places and things.