[hutzlibu]

Erm, are you aware of any other machine, that is able for self repairing and self replicating in a complex and changing environment?

I really would not call my body bad engineering, just because I do not understand how it works in detail.

Rather the opposite, the more I learn, the more amazed I am, how awesome it all is. The complex interactions of chemical, electrical and physical components. (And who knows, maybe even quantum field elements.)

I could not design anything remotely complex at all.

Also, I debug and fix my body all the time, or rather, my body does this mostly in auto mode.