NLHE Hypothetical Question

[D.J.]

If you have your whole bankroll on the table, the amount of money doesn't necessarily matter, but the money itself, however much it may be does indeed matter to you, do you push all in pre-flop with KK against a player with an equal stack knowing that he has an Ace but definitely not AA? I'm just wondering who gambles here and who doesn't.

-D.J.