You aren't you

I am going to start this off with a very straight forward answer. You are not you if you cannot remember anything. Now for the example. Imagine Darth Vader. Imagine his evil and his views on the universe. Now imagine if we took away his memory. The Darth Vader that we have all come to know, love, and put on cathedrals would be gone forever. He would have no recollection of his past deeds. Instead, he would just look in the mirror and see a dark shiny helmet and a black suit. Then he would uncover his power of choking and throwing people without touching them. But he wouldn’t know how to use them. He would be able to become good or evil, or not care. Either way, the dark side lost Vader. And he will never be the same. Now, despite the fact I was trying to make a very corny joke, I had a point. Memory is what makes you who you are. You remember your experiences, which technically are what shape you to become who you are. If you lose your memory, you lose your experiences. This takes away everything that mentally influenced you. Your ideas of right and wrong would be gone. So would your thoughts on religion and on life. Your ability to understand the force would be tampered with!
The loss of your memory is the loose of yourself. You lose your life. This is not to say your name and your body won’t be the same. Outside of plastic surgery, your body will remain the same. But all your thoughts will be different, because there will be nothing to dictate them. You may remember certain action you did your entire life, but with no reason for doing something, this is pure habit, and is not your personality. Your personality is still gone. I feel once you lose your memory due to Alzheimer’s, your spiritually dead, and though religions say that you may live your life over again, I believe that happens to everybody, not just if you have Alzheimer’s.