This question is all situational. If we are talking about early in a tournament where a guy is pushing his whole stack with Midpair and we have AK i rather not risk my whole tournament unless I am the one ahead in the hand.
However if we are talking about late in a tournament where a double up or taking out a player will move me up the money ladder, or get me to the final table, then you bet your *** i will strap up my nikes and get ready to run.
Early in tournaments it is better to sit back and wait for a better sot then 50/50 to get all your chips in the middle.
However when you move the blinds up and get ITM races become a chance to gather some fire power, so it all depends what stage of the tournament we are in.