[Abbaddabba]

I think you're more often getting value from bluffs at the river than you are calls from worse hands. At the very least, it's close. He's usually raising the flop with a top pair esque hand, or a draw. Second pair is less often raising that flop comparatively. And who knows, second pair may very well wrongfully value bet the river if you check to him too.

You very rarely see bluff-raises on the river here, but it's always good to prevent yourself from folding a winner in case he gets feisty.