Why does everybody think their religion is the right one and everybody else's is wrong?

Do you realize how stupid religion in general sounds? "My magic daddy in the sky is better than yours". "My prophet of god is better than yours" Anybody who worships another human being like Jesus, Mary, Mohammed, Buddha, etc and thinks they are more than just another human is in a cult. Religion is nothing more than a socially acceptable cult.

Why does everybody think their religion is the right one and everybody else's is wrong?
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