Good introduction. As much as I love Coke, burgers and french fries, I’m cutting way back. Anthropologists that I have read suggest that man before agriculture was healthier.
Many forms of life have been more successful than man until just recently.
Some suggest that our warlike behavior (American spelling) is like that of chimps. but on a much larger dumber scale.
One commenter mentioned religion. Many (me included) believe that religion arose from assigning human qualities from the associated culture to supermen or a superman to explain things (storms, seasons, fire, earthquakes) that could not be logically explained at that time.
Evolution is largely random rather than improvement. If we see “improvement” it is because the “mistakes” died out. It is also possible a mutation is neutral.