You are making a claim that is theological, religious, and scientific. Yes, our form of life on earth ends when our bodies die today. But what is the essence of us, no one really knows. Various people claim it's locked into your body, or you have some kind of soul that depends on your body. Or your brain is just running a program and the information and mechanism dies when your body dies. I lean toward the last category, but no one knows.

The body is constantly changing. We already know about physical and chemical abnormalities in the way your body works affects your "person" and we can sometimes address them with surgery or drugs. The physical body's limits impact the observed brain. If uploading is possible, if there are some examples of working cases, if I don't hurt anyone why not try it?