JL Nobody
Quote: your comment--"There is not an "I" beyond the I that is present in the world"--suggests that you, too, do not accept the reality of an "I," an ego-self inhabiting (you say "beyond"; I say "behind" and "within") the being (whatever its ontological nature) that is "present in the world."
The being is present in the world, as part of the world; the ego-self presents itself to the world, as apart from the world.
As we have already discuss it, I see the "I" not exactly as the Being. But it is very difficult to me to express the difference in english. In German, the difference is between "Das Sein" and "Das Wesen", and in portuguese "Ser" and "Ente".
Let's say that my Being is the sum of all experience of my "Wesen", the "I" that is in the world. Only in death my Being is complete, because in that moment all the possible experiences come to an end.
That is one of the reasons why Heidegger calls Man as being-to-death.
The "I" is the way I am present in the world. Not because I am not part of the world, or have a supra-physical existence, but because it is me that gives sense to that experience.
The portuguese neurologist António Damásio gives the example of a snail: the experience of the snail, although significant, is very limited: good to eat, not good to eat, dangerous, not dangerous.
Let's imagine a stone. To the snail a stone is not good to eat, not dangerous, not good to mate. That is what a stone is in the snail experience.
To us, is different. In our experience, the stone isn't just there. If we perceive the stone, we experience it's geological properties, or we experience it as a weapon and so on. We give a meaning to our experience of the stone. The "I", as conscious "Wesen", is always revealing the meanings of things. Human beings give the world it's "Being", making things appear as significant things.
In fact, I believe my perspective is the opposite of yours. You believe that the "I" is a chimera: reality to you means the "dilution" of the I in the All (or in the Nothing). To me there is always an "I" in the experience, giving it a sense.
But in one point I think we agree: the "I" exists only in it's presence in the experience.