Just like going for it on 4th and 2 a few years ago in Indianapolis, Belichick's decision was the correct call to make. The benefit of converting the first down FAR outweighs the damage caused by not converting it. If they convert they are in field goal range, they get a new set of downs to run the clock out and it's basically game over. Punting (assuming it's not a touchback) would probably net 20-30 yards. Giving up those 20-30 yards for a chance to ice the game is a no-brainer. It's math. You give yourself the best chance to win the game. Do not be results oriented. What happened on that play was basically the worst possible result (other than a defensive TD). Losing a ton of yards on a fumble is almost never going to happen, a pick 6 is rarely going to happen...its not something that you ever should think about when making a decision on whether or not to for it. Going for it was the right play. In that situation they should go for it every time...and I really hope Belichick doesn't get gunshy the next time it comes up. He truly understand situations like this better than anybody else in football, so I don't think he will change, thankfully.