To a degree, the Greek and Roman mythological heroes are just the first superheroes. They appeal to children for much the same reason. These gods and heroes may have powers, but they get angry and they do the wrong thing. They are human too.
At 20, I realized that I could not possibly adjust to a feminine role as conceived by my father and asked him permission to engage in a professional career. In eight months I filled my gaps in Latin, Greek and mathematics, graduated from high school, and entered medical school in Turin.
I'm in favour of religion as a tamer of arrogance. For a Greek Orthodox, the idea of God as creator outside the human is not God in God's terms. My God isn't the God of George Bush.
Superheroes fill a gap in the pop culture psyche, similar to the role of Greek mythology. There isn't really anything else that does the job in modern terms. For me, Batman is the one that can most clearly be taken seriously.
It is my great good luck the words I use are English words, which means I live in a very old nation of open borders; a rich, deep, multi-layered, promiscuous universe, infused with Latin, German, French, Greek, Arabic and countless other tongues.