In my experience,
Speakers with a good sense of humor stand higher chances of being invited over and over… And over again.
They also make friends more easily.
They build rapport with their audience quicker than the dry and over serious ones.
They are more likely to influence people without creating enemies. Since people like them, people happily follow them.
People will always compensate for their weaknesses. When they make mistakes, people easily understand (or claim to understand) and quickly forgive them. You know, it takes being less judgmental to be humorous.
They stand better chances of educating people, correcting them and changing them without creating enemies.
They can sustain audience interest for a longer period than the dry ones.
They leave memorable moments in the mind of their listeners.
Shebi I told you?
HUMOR is the key to better public speaking.