...
-cut-
After all, science has barely begun to accept the idea that there is a soul and spirit. Even if the physical body has been kept alive forever, will the connection between it and the soul/spirit always remain, as well? We are far from understanding things like this, and they may not even be something we can understand.
Besides, when the connections are weakened, there are evil spirits that want to get in and take over both body and soul, right?
Wrong. Science doesn't acknowledge the existence of soul or spirit. Even the religious circles can debate on the definition of the concept and everyone in those circles seem to have their own views.
Maybe some mentally deranged scientists do believe on that but their research on proving something so vague wouldn't hold any water.
Much of what you say is based on your own wishes rather than scientific experimentation. That being said, since it's very difficult to scrutinize the unscrutable, there isn't very much factual info, yet... except for the very fact of personal identity.