I don't know. Trying to pick which service is the most boring is like trying to pick which politician is the biggest asshole. I mean, why do you think they make those pews so goddamn uncomfortable? They don't want you falling asleep.
Even if the open windows of science at first make us shiver after the cozy indoor warmth of traditional humanizing myths, in the end the fresh air brings vigor, and the great spaces have a splendor of their own - Bertrand Russell