It's really quite simple. Humans are arrogant
enough to assume the world was designed for them, but fail to see all the evidence for a different case:
Human eyes have a bundle of nerves come in the back through an opening and then splay out to the various light rods. This is a design flaw, as it creates a blind spot. Giant Squid, on the other hand, have their nerves attach to the back of their eyes, like they're supposed to.
Humans live on land. Giant squid live in salt water. Guess which the earth has more of?
The giant squid's only natural enemy is the sperm whale. Guess who hunts the sperm whale? Humans.
BTW, since some people seem to think otherwise, TWAJS and HHOS.