Sometime you gotta hate poker...

OK so i played the Palomar morning tournament... again played very well... was up... was down and back up again. Finally got down to 11 players (paying 7 today) with the blind 500/1000. I have about 10,000 or so in chips and a very aggressive guy (with more chips than me) in front of me bets about 6000... I look down at KK and go all in... a guy to my left (also with more chips) goes all in also and the original bettor thinks for a minute and calls. The guy to my left turns over QQ and I tell him I have him dominated with KK... finally the original bettor turns over 66. I am just asking the deal not to match any ones hole cards and the flop comes 349 rainbow... the turn is a five... and the river a 2. The original bettor runs a four card straight on the board and instead of my being the massive chip leader, I am on the rail. Gotta love (I mean hate) poker sometimes...