I don't care for prologues, and sometimes I actively dislike them. I always read them, of course, but it feels like we're easing into the story. I would rather just dive right in. Plunge me right into the story from the first paragraph. I remember in the early Wheel of Time books, the prologues didn't even have normal page numbers. They had roman numerals, and page 1 started after the prologue. That just feels like a delay in the story.