Comment by tsimionescu

You very much are your experiences. You are the sum result of your formative experiences and memories - no more and no less. Sure, I've grown since I was 9 years old, but there is an uninterrupted stream of experiences from when I was 9 years old up to now, and some of the things I learned back then are a part of who I am today. The raw concept of consciousness as the observer of your mental states, the "thing that reads your experiences", is not recognizable as a real mind - if it has no experiences of its own, it is a blank slate, with no desires, fears, intentions etc: those all come from formative experiences and lessons learned.

Alzheimers destroys this stream. All of a sudden, key formative experiences that made me me disappear irreparably, and so what survives is not me, it is a new consciousness formed of other experiences (mostly a subset of the ones I had, though Alzheimers can also sometimes create fake memories from pieces of real memoeies, conjectures, maybe even dreams or old desires etc). And while this is a consciousness, it is not a regular human consciousness, since it doesn't have anything similar to the regular human uninterrupted stream of experience, it is a consciousness made up of fragments of the consciousness of another person. And it is uniquely well positioned to hurt the people that the original person loved the most in the world, without realizing they are doing so. Plus, the life of the new person inhabiting your mind will be, inevitably, horrible. Because, again, they will be in constant shock and confusion because of their missing, incomplete, disordered memories.

So yes, the person we're talking about took a choice to avoid this horrid change. He was afraid of change, yes, because he knew well how horrible said change is, entirely inevitably so. It's normal to be afraid of horrible change. If someone is about to cut your leg without anesthesia, it's normal and good to be afraid of said change, and try to avoid it if you can.