If it is human nature to be competitive, then bullying is a tool to sort out the hierarchial pecking order.
It is a sub conscious top-dog, that you should be aware of throughout your life.
Human beings, no matter how accomplished, clever, or civilised will always shows more opaque traits of narcissism, with pepperings of socio, and psychopathic thought processes when given absolute power, and authority.
Bullying is human.
Learn to fight, learn to struggle,
or learn to absorb the misery.
Sorry, but the meek, and mild have always suffered.