Ego is so misunderstood by most people. The "I" is widely debated. But what is the "I" really? Who are you? Is it your name that's given to you when born? Are you that name? I doubt it. Are you your brain? Debatable, but scale it down and even the brain can't be identified with. A neuron firing and thoughts that are thrown at you isn't exactly "you" either. Your body? Cells get replaced constantly throughout the years and it's completely different from say 10-15 years ago. I personally believe that ego-death is breaking out of the illusion that you and the outside world are somehow separate. When you are everything and also nothing at the same time, that is ego-death. It has nothing to do with tripping balls or being fucked up but that may be the catalyst for such an experience.
Your name is part of your super ego. Everything you are to me is, in a sense, your super ego.
All questions you have about who you are, are really questions about how you are related to the rest if the world, what you represent, where you are at, etc.
No such questioning can be applied to the ego. You cannot ask, who am I? You are you. Where am I? You are right where you are... and so on.
There is only one ego in the room. That's me (you). Your ego is not present in my universe. I don't know that you have an ego. Only that you have a heart beat and some brain waves. Your ego is not this and not that, and when you are done with everything you are not, there is no question to who you are.
There is a definite
experience, in which everything is explained in terms of ego potential. Anything and everything that you desire, all you have attained, what you will miss when you are gone, (dark side of the moon) et al. is all your ego. Such a paradox. Your ego is every experience. This is a total experience and it is quite overwhelming.
All at once you see the "limitless" expression of the self and that you are the universe. Nothing that can be known to the ego, may surpass the ego. Ego-death, semantically, should then be the loss of self. In a way it is. You are quite lost, along with the whole experience, the destruction of the entire universe and the rebirth into a new universe where one lives in a constant state of ego-awareness.
However, if it was not a constant state before ego-death, then it would not be a revelation. Once you are aware of that, chasing it would be like tying your shoes, telling someone about it would be like telling someone what a bath is like. No sooner do you learn that you are everything than it should be forgotten.
Where you are at, in a natural/normal state, is the end result. Ego-death is like a new birth, mentally, into a body of some years age.