At my age it's a maybe/maybe not possibility I may see the dawn of human/machine hybrid making it possible to exceed the current lifespan predictions for my generation, and certainly it will be a reality for coming generations.
Enhancement (think pacemakers, robotic limb replacement, Oscars legs) will ebb starkly toward the norm and add ons taking humans to the next level is less than a decade away. Instead of machines and robots taking roles/jobs away, we will shortly be the machines.
I see this as natural evolution that's not biologically driven, but mechanics driven. Far fetched? Perhaps, but look at super soldier engineering, warfare has always preceeded the advancements in society, and tell me straight that human/machine hybrid humanity isn't coming.
Sure the suits will still be styled in silk but the manual labour will still be run by the grunts in biomech suits.
That for me is not some scary fantasy but a great horizon we will cross to become an enhanced humanity, and I can't wait for the day to arrive. In the history of man kind there has never been a more exciting time to be alive. I look at my grandmother and see what she witnessed, and her parents witness, horse and cart to formula 1, the rise of flight to jumbo traversing the globe with millions of passengers, rockets launched from short distances to objects launched into the depths of space,telegrams to telephones to smartphone, biros to computers sending virtual mail, to skyping, the list goes on. In a century and a half we have nearly arrived from medicines to medical science to near immortal, and everyday we take one step closer. That all told is a thing of beauty and triumph, and something I feel overwhelming lucky to be in the middle of.
