[EliteNinja]

If I 3-bet the turn and my opponent only calls, I will have better pot odds to call on the river (side benefit). Also, I will know if he has a straight or trip threes if he caps.

If he calls, I have a good chance that my hand is good and will continue through the river (betting river so he may fold). I stand the chance of winning more than 2 bets.

If he caps and I fold, I lose two bets from the reraise.

If I just call down, I will lose two bets from calling down OR win if I do have the best hand.