what is Ego, does it really exist?
The Ego is now seen for what it is, a collection of thoughts/memories that produces other thoughts which attract judgments (more thoughts) about the worth of an idea called self.
It's a label for a concept.
It exists as much as any concept can exist. That is it is maintained by thought.
When thought stops, Ego stops.
i also use the term ego for those useful thoughts (mostly 'unconscious') that take care of things like tying shoelaces or nose blowing - daily living stuff that doesn't require attention.