limp AA in 6-max games?

[cbloom]

I'm normally a big proponent of raising aces preflop, but in the 6-max SSNL games it seems there are so many people willing to get all-in with top pair, it might be +EV to just limp AA ? In particular I'm thinking on the button or in the CO if it folds around to you, and your opposition is very weak but willing to get allin with top pair. Why not just limp AA and let them catch a piece and then push?