That's typical fan shortsightedness.
It's not about a lesser product because you think the next back will be a lesser player. Its about using your limited cap funds the most efficient way over the entire roster.
I'm not delusional enough to believe Murray is the reason they're running the ball so well and if he's not that impact player then I'm not about to pay him like one as he ages. I'll go young and use the cap space that would have went to Murray on other areas of the roster. Odds are you'll wind up with a better team than simply resigning the current back.
That offensive line will make stars out of a plethora of running backs. Those are the guys I break the bank for.
LOL. Pure speculative self aggrandizing drivel. Plethora of running backs sounds suspiciously like "any 500 coaches can coach this team". It was nonsense then, and it's nonsense now.
As for age, Murray's window is very similar to Romo's. The time to win is now, not some magical fantasy in the "near" future. No one knows what happens next season let alone in 2-3 years from now. You can't just substitute ingredients willy nilly and expect the same gourmet meal. No chemist expects the same or even similar results when even ONE chemical is changed for another. No businessman worth their bones will replace a best selling item with a lesser product and expect the same return.
I know you think highly of your opinions but you are wrong on this one. Murray may be having a once in a lifetime season, or he could beginning a Hall of Fame one, you don't know, no one does. But I am going to bet on the horse that has carried this team out of mediocrity and rejuvenated the championship aspirations of this franchise. This OL is special no doubt, but when they block for Murray, history happens.