Think of something you badly wanted and did not get. The flat that went to someone else. The job that went quiet after the second interview. The person who chose differently.
A fair number of those, looked at from here, were escapes. You would not want that flat now. The job folded eighteen months later, and the people who took it spent a year looking.
You are rarely in a position to tell at the time. Which is the only real argument for patience with a refusal — the story is not finished on the day it disappoints you.