The human body is truly exceptional in the best kinds of ways… but also really fragile at times.
I can get a poorly functioning knee just from walking a bit further than my limit. I can get pains in my hands from performing minor, low-effort tasks with them over and over. I can twist my ankles, get my shins kicked, or just try to break my fall after tripping and break my arm instead. But an ideal mechanical limb won’t suffer from that. We may not be able to make them perfectly yet, but unlike our own bodies, we can actually improve them.
For all the dystopian fiction you can write about scenarios like these, a future in which bionics are an affordable and accepted part of life seems great to me (as long as we can maintain transparency). It’s not about performing super-human feats (though it certainly can be!) but rather about small annoyances and easy fixes for our oh so weak bodies. Knowing that we are more properly engineered than evolution can do on its own, engineered to withstand and outlast– even better than we already could.
…Granted, physical fitness will alleviate a lot of the issues you can solve with bionic limbs, but we haven’t talked about the senses yet. Augmentation of our perception, what a wide new world that would open!
It may be scary, but if the tech gets good enough we’ll eventually end up there anyway. Change is good.