People read Paul's works without asking themselves questions about his teachings. They accept them as they are. When I read Paul, I acknowledge that lots of things are true and Christian-like. But many things sound anti-Christian to me, and some of them, even devilish.
A modern Catholic bishop (that I admire much) said once: "Jesus has destroyed the divine, because he announced that the human is the divine" He means that Jesus showed us that the divine is our humanity and our duty is not to stain it, but to keep it divine. In other words: no external powerful God can ever us. But our salvation is our little creation.
Paul said the contrary: he insulted the human nature, by calling it sinful and doomed to evil. And that only an external God can save men.