Transhumanism is inevitable. Shortly after prosthetic performance exceeds human performance early adopters and those willing to push boundaries will opt-in to the technology. Acceptance is then just a few short generations away, all the while the state-of-the-art will continue to improve.
Can you imagine a future baseball league with a F1 style technology homologation committee to normalize the performance of the athletes' augmentations? I can't wait! Unfortunately I probably won't live another 80-130 years to see it.