People don't come to church for preachments, of course, but to daydream about God.

Vonnegut’s line contrasts formal religious instruction (“preachments”) with the private, imaginative experience many people actually seek in worship. It suggests that sermons and doctrine are often secondary to a quieter human need: to contemplate the idea of God, to drift into reverie, hope, or moral aspiration in a setting designed for transcendence. The phrasing is characteristically wry—undercutting clerical certainty while granting dignity to the inward, non-dogmatic spiritual impulse. Read this way, the quote is less an attack on churchgoing than a defense of personal, imaginative faith: religion as a space for reflection and longing rather than persuasion or argument.