At this point one might think a human is nothing but a souless machine.One might also ask what exactly is a soul, and why can't a machine possess one? Most religions don't actually provide a clear answer on that point, since they rarely talk about souls explicitly; instead the concept of souls must be inferred from their other doctrines (and usually stops making sense when you try to apply those inferences outside of their original context).
Mind uploading is going to confound a lot of theologians.
The idea of who or what has a soul depends on who you talk to. If it
exists what is it, a life force? How can we tell if a being has one? I read
once a scientist placed a dying man in a closed space to see if he could
catch a soul, Or even to see if the man lost any weight at death. People
used to believe they should leave a window open when a person dies. So
the soul could leave.
If in the future we create a android body we can transfer what makes us
special to ourselves into it. Would a soul follow if there was one? Personally
I don't worry about growing old and dying. If I have a soul I am sure it will
do what souls do when we die. Death to me is no different than what I was
before birth. If there isn't a life beyond this one, we won't know anyway. I had
to have my heart started with shock several years ago. I don't remember seeing
any light tunnel or even an out of body experience. The last thing I remembered
was blacking out. Then waking up with a very sore chest.
We shouldn't embrace death, but it's a fact of life as we know it. I think using
tech to give us a longer more viable life is fine, and I would be happy to have
mine extended with technology if possible. But not unless the tech gave me a
worth while life.