I don't see how i should have limped here, so many times i've limped in with a good ish hand only for the BB to come in for free and hit 2 pair, maybe the pot sized bet was not so good and got me in a spot i didnt want to be in.But i was trying to shake this guy off MY POT
Once you raise pre flop you have to bet that flop.
There is no need to raise with AT though, if the bb flops 2 pair with rags it missed you anyway.
By raising with AT you drive out the hands you want in, A2-A9, AJ AQ AK will probably come into the pot, which means your reverse implied odds when the A hits are huge. Also what if you get 2 callers behind the flop comes Q72 and you are first to act? You fancy you can take it but have no idea what they have! I don't like getting in raised pots with weak aces in EP.