This is the reason why you hear about poker pros that have multiple WSOP bracelets, even though they have never won the main event. Phil Ivey and Allen Cunningham come to mind with several bracelets each. It is a much more daunting task to win the Main Event bracelets, than it is to win the 1,500 Omaha HL PL with 367 competitors! That is why all pros covet the Main Event bracelet most.
With a small raise you are inviting low pairs, low connecters, weak suited aces, weak suited kings, and unpaired big cards. With such a variety of possibilities, you are essentially playing blind, and hoping your kings hold up.