People who actually have a healthy amount of self esteem don't generally feel the need to yell about how great they are. Just like no true king ever had to yell "I'm the King!"
With your second statement you're going well out of your way to miss the point and projecting your own issues on to me. You're the one being belligerent to everyone who doesn't agree hard enough. Like you said what you're doing going hand in hand with being void a decent amount of brain power.
But hey: Scream if it makes you feel better. No one is listening.