Ego is delusion and it gets in the way of true perception. Overcoming Ego is a necessary part of life journey. Ego is a child. Ego is what happens when the Babbler becomes the dominant Avatar of the Mind, controlling the body in thought, speech and action.
Destruction and/or aversion of Ego is a huge part of shamanic practices for the development of true insight.
This is often a part of the Way of the Warrior.
Don Matus guides us;
"The Warrior acts impeccably."
"After I had satisfied every desire, too much too young too fast, and through meditation, soul-searching, learning experiences; I finally achieved an egoless state. I became the pure observer. By non-action, non-intercession I watched many times karma play itself out. And what was left of me, was so devoid of personality, they named me robot." Robot