Limping with AA in NL and in tornies

[Reel Deal]

I can understand some of the rare circumstances where one might limp with aces, but to me it would be the same as having TPTK or two pair after the flop with a draw-heavy board, you gonna check or lead out with a weak bet then? No, of course not, so why do essentially the same thing pre-flop? It just rarely makes sense to me. You're well ahead preflop so why let people in on the cheap?