Belichick is going to be 66 in April. And I really believe if he'd won the SB, he would have retired. At the same time, he's made a couple of big decisions that seem really odd. Letting Garopolo go for a second round pick? Benching Butler for unknown reasons, and not putting him in when it became obvious the backups weren't getting the job done? Besides, the job has to be a grind. Having new players at multiple positions each year, teaching them the "Patriot way", all the expectations- the Pats are already favorites to make the SB next season- how long can he keep going? And how long will he want to keep going?