If you have less then 15 BB then obviously yes, but in all other situations it depends on the opponents and table situation. If 2 of your opponents shoving,then you need to fold ,because one of them will lose and inrease yours prize
If I am shortest on stack then definitely yes. In other cases it depends.
If you are on a Button and only one person went in then it is also good idea in my opinion to risk all.
Need a lot more information to answer. If I am short stacked, most likely yes. If I have a huge stack and just the short stack to push on, yes. Otherwise I am playing this out.