In a lengthy discussion of the many worlds interpretation of quantum mechanics, computer scientist Scott Aaronson made a side comment that was perhaps the most prescient:
What you have forced me to realize is that ... what I'm uncomfortable with is not the many worlds interpretation [of quantum mechanics] itself, it is the air of satisfaction that often comes with it.
Unfortunately in this world I have been observing, there are people with even greater confidence in a theory with far less credibility.