soma (and a plethora of other works have) has already explored this concept and it doesn't work like you wish it would. basically the you that's reading this right now is completely and irrevocably tethered to the bag of flesh and bone that is sitting in front of some device today right now. you are completely inseparable from that body and when it dies, you will cease to exist too. now let's pretend that sometime before that occurs, a method of "uploading" your entire memory bank and persona to a computer system for "eternal life" through an ai with your information. that new version of you may as well be viewed as a new baby being born, it is its own entity and will branch off to form its own path completely separate from you. furthermore, it will have its own consciousness much like the one you will still inhabit after the upload is finished. there is no way out, the only thing that comes close to this idea of immortality through machines is what you see in futurama where they have brains in jars. obviously rudimentary and for comical effect, it is the closest we can get to extending human life beyond the limitations of our physical bodies. your consciousness is bound to your brain, and it shall stay that way forevermore.
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