Ill give you the typical answer. IT DEPENDS! From the size of your blinds (20) this is early in the match. If the buy in is small and you feel like taking a chance why not call all in. If its a SNG of 9. You win you are chip leader. You lose you play another one.
If it is a MTT you might want to stick around for a while. You want someone to call your raise and see the flop. An A comes up you might want to muck if there are a couple of bettors.
If its not a small fee and something like a tenth of your BR I fold them. You get a raise and a reraise you dump and wait for a better spot. Your KK gets beat by AA and any set. Why take a chance unles your stack is so small you are getting the proper odds
to call. Or your stack is so large you can call without fear. So you are upset that you see the results. But what would happen if you saw AA and a set. And the K came on the river would you still be upset that you didnt call.
Amarillo Slim says that if you cant fold the winning hand you cant play poker.