I don't raise this pre-flop either. Weak aces out of position 3 way are trouble, mainly due to reverse implied odds. You likely won't get ation if you hit your hand, and if you miss you end up betting into an inflated 3-way pot with just A high. You might get to take it down sometimes on raggy K x x type boards, but I don't think these are enough to justify the PFR. This is one o those instances when giving up a bit of equity pre-flop is worth it in my opinion.