[Luisgallo]

Did not say it is bad, just said that more than often people don't play it like this.
IMHO you scare out all the semi marginal hands that might have called your reraise.
As a matter of fact 20% of the time you lose and when you do you lose all your chips therefore you want to double up the remaining 80% of the times.

I am not convinced that reraising all in with AA is achieving this since hands like AQ, AJ, probably JJ and then 10 10 will correctly fold.

Bottom line: chances to face AA + chances to face an AA push are minimal.