Earlier quoted context omitted.
As we are not organic beings, clearly it would be foolish of us to accept such unnecessary inefficiencies.
I agree with the second part of your statement. Why not make things more efficient where we can?
1) Because it isn't always worth the cost
2) Because we don't always fully understand the systems we are modifying
Which hearkens back to, "Don't fix it if it ain't broke". Inefficient is not automatically broke.