All poker players gamble!:dancing2:I decide before the tournament. Usually I don't rebuy, that's the buy in for a complete new tournament, a new chance.
Sometimes I calculate a rebuy and an add-on from the beginning, (hopefully I don't need the add-on ) At the end it depends on Tournament size and winning chances. I have found out for myself: either it's your day or it's not, you'll know with only one buy in.