I hate blocking bets

[cbloom]

Man, I hate blocking bets. Typical scenario :

Hero with AJ raises 3x preflop, LP calls
flop is J-high with two spades
hero bets pot, LP calls
turn is a blank
hero bets pot, LP calls
river is a spade
hero ?

Blocking bet just seems like giving away money. It feels like check-call is almost always more +EV. If you assume he will bet the same amount that you would block, it costs you the same amount to check-call as it does to blocking bet, and you are gauranteed to get a showdown. Blocking bet exposes you to being bluffed off the hand.