straight hate

Didn't know where to post this, but I needed to get it off my chest.
Hero on Button with K-Qo. UTG raises, 3 cold caller, hero cold calls. Blinds fold.

Flop.9,10,J rainbow....saweeeeeet. UTG bets, all call.(decided to slowplay and get max profit on turn)

Turn. K..hmmm not so good. UTG bets, all call, hero raises, all call.
River.....Q..... UTG bets, hero ..... screams / cries / or giggles slightly insanely?
No prizes for guessing what UTG had, don't know why I even bothered calling it, I guess I wasn't thinking too straight (no pun intended) through the red haze...