...Or the notion that human beings have souls?

There can already be replaced some human body parts and perhaps in the future we will be able to replace all human body parts and basically create human robot with soul. However, you can’t build a robot from scratch having soul. I hope my point makes a sense. Robot will always do what he was programmed to do. When scientists speak of the soul (if at all), it's usually in a materialistic concept. As history and present teaches, science has rejected the soul as an object of human belief. They say “You are just dust orbiting the core of the Universe”. They think life is just the activity of atoms and particles. But if we add life to this process, we can explain some of the puzzles of modern science. Recently I read a few articles where some scientists are challenging this theory. At the end the answer is sooo simple “HAVE A FAITH!”
In my honest opinion I would rather die trying than have a chip implant in my brain. Just like you mentioned, only rich would be able to take advantage of it, to live forever. Not only because they would be able to afford it, but because they know they are doomed once their time would come.

Maybe it would be better to just live in the jungle and go against the herd if that truly does become our future reality?

Yes, I agree! I completely understand we can’t stop progress in technology. People loosing their limbs or even an eye will be able to use their hands again, will be able to walk again or will be able to see again. It’s already happening and I do cherish this idea. But why can’t we have technology being technology and humans being humans, just the way we were created? Do we really want to live forever? And I’m certainly not a fan of replacing our body parts with artificial substitutes just to enhance our abilities for reasons such as professional athletes. That would suck! Only people in need should use it.
This subject is really sensitive, but at the same time we should talk about it.