[dave44]

If he is actually a smart TAG, you're right that the river bet probably isn't worth it. I can't think of any hands hero could have played well if he check-called the river. Once you call the turn, he has to put you on an ace, jack, or QT, KT, or KQ of spades. Once a king hits on the river, even your draws hit something. So villain should really just be betting out with his marginal hands hoping you call with a pair of kings or jacks if he beats that, or check-folding if he can't.