i am waiting for cyborgs and augmentations, then maybe we wont need food for energy anymore, we could survive the way plants do, by using sunlight to charge ourselves.
any part we damage could be easily replaced easily. i am not talking making us extremely strong or fast but we could us addons to do heavy lifting, or if we wanted go from one place to another. and as far as hacking goes its not possible unless a connection is made with the system either wireless or wired, that is like if the device does not transmit data wirelessly then it cannot be hacked wirelessly.. for example you cannot hack your washing machine wirelessly or do anything wirelessly to it. so you are safe.