Do we really have to solve these problems though? Why would anyone want to have an inferior bio limb when they can substitute it with a superior and easily repairable/upgradable mechanical limb? Granted that the artificial limbs we have right now are pretty basic, but wouldn’t it make sense to improve it rather than trying to grow new limbs?

Also if you think humans would ever become a space faring species, would it really make sense to stick to our carbon based biology or should we invest in transforming into silicon based beings

You should really step outside more and touch some grass