Why are the speakers leaving?

Man: This is the most boring play I have ever seen. Who told us to come see it?
Woman: I really don’t remember, but we don’t have to stay to the end if you don’t like it. We can leave if you really want to.
Man: All right. Let’s leave now before I fall asleep and start snoring.
Woman: All right, all right, calm down, we’ll go. Though I really think it’s a shame to waste these seventy-five dollar tickets.
Man: What? You paid that much for us to see this play? Next time, why don’t we just rent a movie for two-fifty and stay home. I’m sure I’ll enjoy that a lot more.