Well, that's the power of the Implied
odds.
When you reraise, or raise big, it gives away a lot of information about your hand, that you might as well play your Aces faced up on the table. But consider that if the opponent hit their hand, be it 36, 45, 23, or a low pair transformed into a straight or set, can you let go of the hand? For the 99% of us, probably not, especially if the board is not threatening. (By the way, I wonder if anyone has ever folded KK preflop)
Yet bigger raises or moving All In, isn't the best way to play them. I believe AA deserves more than the blinds. However, AA is such a vulnerable hand after the flop, losing to 2 pairs and higher. So you shouldn't bet your entire stack, just to pay off your lucky opponents.
I urge you to look up Youtube.com for the Sammy Farha vs some amauter game. Amauter raises to 1k (overbet) with AA when blinds are at 50/100. Sammy Farha calls with 33. Flop comes with a 3, giving Sammy a set. Sammy checks, amauter bets 6k. Sammy moves all in. Amauter calls remaining 4k. Turn and River misses, Sammy collects pot.
Verdict.
Sammy knew that the amauter's hand was very big, by the overbet. He was also smart enough to realise, that the amauter would not be able to lay down the hand easily. He knew that if he hit the flop, making a set, we would be able to extract his opponents entire stack (High Implied Odds). Since his chance of hitting one of two outs (two remaining 3's) on the flop = 12%, he would make a profit by calling the 1k to win 10k, a 10% call.
As put by sammy, and the nature of Poker itself. You have to gamble to win.