Sometimes people are wrong, and that makes them feel bad. Sometimes they even go so far as to spend two years trying to justify themselves. It's better to admit being wrong than to break all your toys and throw a two year long fit.
Now I can see the Left seeing all kinds of problems with that
Unless it directly affects them, people in general are apathetic about world issues. There are far too many problems in the world to worry about and far too many people creating new problems. If one were to concern themselves about world affairs, there isn't much one could do.