Why are Capricorn people so smug?

Honestly, Capricorn people are such fools. Shall we go down the list? Capricorns are cynical, mean, self-centered, materialistic, narrow-minded, insecure, and stubborn.Capricorn people are hard people to be close to and they hold grudges often too. This sign really perplexes me, even more so than Pisces. Glad I'm an Aries. Would you agree with me? Or what do you think of them?