There is nothing quite like being transported to a completely new world, of following the turbulent life of a plucky young protagonist who defeats fantastical evil against all odds and grows into their own. Answer this: in the current popularity of realistic fiction, where is everyone's favorite hero?
One of the hardest parts of the writing process is getting honest feedback. Close friends and family think nothing of lying in order to spare your feelings about as little as a poem. So they'll sooner tell you that your baby is ugly than that they didn't like the manuscript you've agonized over for two years.