Its not a huge money maker, but it can definitely be played profitably. My average winnings are about 1/2-1 big blind on A9-A2s. Even if you break even with it, its still widening your range which is a good thing. And because they tend to lose you small pots and win you big pots, they will rarely be the cause of major downswings. I agree open limping with it is -EV, and if there is a lot of PFRing than limping in mid position after 1 caller might get you in trouble too. But its a hell of a lot better hand than [any 2], which seems to be the value you are placing on it if its only good for stealing blinds and cbetting.