The human body is a wonder of completely random chance, but a complete and utter failure of any kind of system. Anyone who isn't a transhumanist is a total jobbernowl, in my humble opinion.
we have organs that only exist to kill us, our mouths are completely fucked, our bodies will just stop making vitally important chemicals, it's stupidly common for our bodies to kill themselves because it freaks out at perfectly benign things, our super special brains take very stupid shortcuts, and of course the bones. A biologist could probably go on for hours about the failures of evolution, but i am not a biologist.