50nl zone 100bb eff

UTG opens 3bb
Hero is UTG +1 and 3b to 10bb with AA
UTG calls

Flop: KKJr

Check, check

Turn: 6 (no flush draws)

UTG leads 10bb, Hero calls

River: 2

UTG leads 33bb, hero folds

Thoughts? Looking back Not sure why I folded here, maybe because the pool was playing so tight. Sure villain has Kx in his range but he also has some suited Jx and good bluff candidates like AQ, AT, maybe QT. I think if I call I only need to win about 1/3 of the time too... and AA is top of my range given how I played it. Would Check raising turn be better than calling?