To me it isn't even a question. Of course the do it. It is the safest course of actions.
1) If you score, the game is over.
The Vikes face a 99 yard march to score a TD or a 80 yard march for a FGA. They may use clock to run once or twice to merely be able to get enough room to pass.
2) If you don't score here are the bad possibilities of alternatives.
a) a FGA might be blocked and a long return could be possible.
b) a good FG requires a KO. KOs have been returned for a long return.
c) KOs have been returned for a TD.
d) Assuming a normal return to the 25 yard line, they have a 75 yard march for a winning TD, 24 yards less.
e) They have only 50 yards to march for a FGA, if the FGA was bad.
The Pats wanted to score but not too soon. IMHO they tried to burn time off the clock, so they ran two QB sneaks. That play requires no RB hand off, and reduced the possibilities of a fumble. They then tried to score on 3rd and 4th down if necessary.