Why am I me?

[toro]

Universe appears designed and fine tuned for life

Why do you draw this conclusion instead of that life is so fine-tuned to the universe? By this same argument...
The word 'lucent' was picked just perfectly for you! If it were not for your desire to use it as a member name on atheistforums.org, God would never have inspired man to develop language to create a word that would sound that way while simultaneously meaning bright and clear. That was some thoughtful work on its part.

it explains how a well organizaed and infinitely precise

The universe cannot be infinitely precise. This contradicts the current and leading theories of physics.

Universe arose from something chaotic,

The dynamical interactions explain this. Hence, God is unnecessary unless you are defining God as the interactions. In which case, you need to separate your definition of "God" and "YHWH" in future posts.

and that out of nothing.

You are assuming the universe came "out of nothing". This remains one of the key, unresolved issues of modern physics. Some theories have the universe always existing. Others have the universe starting due to collision between super dimensional membranes. Others suggest that the "universe" is actually a reflection of nothingness (ergo, nothing still exists). Others have the universe spatially expanding in reference to another expanding in the opposite spacetime dimensions. This last one then simply means the universe only has value with reference to the other, and therefore outside of both nothing continues to exist.

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One theory is that 'you' exist separately from everyone else because physically, the universe is a collection of separate, isolated systems. Hence, only the interaction between systems (from the POV of one system) exist. The objects causing the interaction have no physical existence.

Physically speaking, this is a form of relativity. The sun doesn't have a definitive physically existence to anything not interacting with it. From the POV of an electron named Jim, only the photons hitting the electron at any given moment do, and the electron stops being the electron and becomes the electron-photon. Anything that is not interacting with it does not exist. From the POV of a human, since we are neurologically a signal in the brain, our neurological signal exists but nothing else does. Hence 'you' are conscious because from your POV, literally nothing not entering your brain physically exists. You are the universe in a sense. Your brain signal does not physically interact with mine, and they remain completely isolated, hence they exist in separate 'universes' so to speak.

This is only possible if we assume there is no objective background universe of which we are interacting. If we do, then that explains what "I" am and why "I" am not "you". This simultaneously means that nothing else can simultaneously physically interact with us (ergo, "know" our consciousness) and everything else at the same time. Read: God.

This is the end result of the RQM interpretation of quantum mechanics.