Pride goes before a fall
On Simchas Torah I davened vasikin at a different shul then I normally daven in. The בעל קורא who read וזאת הברכה was a well known talmid chochom from the neighborhood who is the best בעל קורא that I have ever heard, someone who knows all of Tanach literally by heart and never makes a mistake. After he read חתן תורה a different person from the shul came over and insisted that he lain בראשית and the haftara. The first בעל קורא did not object. Unfortunately the second בעל קורא is not on the same level. He made many mistakes in the trup as well as a few mistakes in the words. The haftara was similar.
The question is why did he insist on laining? He knows the first בעל קורא and therefore had to know that the first בעל קורא was going to do a better job. The only answer that I can think of is כבוד/pride. However, the fact is that instead of bringing him כבוד his actions made him look foolish.