The human body is not "made". He evolved. This is why we find faults, imperfections and vestiges of this evolution.
Here are some examples :
External testicles in males exposing them to danger (other animals have well-protected internal testicles).
Menstruation in women.
Bizarre trajectory of the laryngeal nerve: The latter goes around the aorta before going back to the brain.
Wisdom teeth that grow all over the place causing intense pain to the point where they really have to be removed (they are no longer useful anyway).
The muscles that move our ears. Do you use them? They are there taking some of our energy while being completely useless. Spoil those little muscles.
A single tube for both eating and breathing. It's handy for getting off track from time to time.