Its all about the price tag guys. I am not saying let him walk because he is 30. I am saying we should let him walk if he wants to be the highest paid corner in the league. Smart organizations don't give 30+ year old players those kind of contracts, and neither should the Cowboys.
Now, I am also not saying that there aren't any exceptions to the rules (as I have already stated).
Furthermore, look at the secondaries of the Giants, Colts, Patriots, and Steelers - none of those teams have players in their secondaries with contracts like TNew's next one. However, they do have pressure players that make money like Ware will make. Tells you something about how winning organizations allocate assets.