Most occupations have some sort of competitive element. People like to push their limits to show they are tougher than others. In some, it means they go with out sleep. In other occupations, people may push through the pain of stress. Or they might endure colder or hotter temperatures just to prove how tough they are.
The same thing apparently happens in public speaking.
I just got back from a trip where I did an hour and fifteen minute presentation each of 4 days. There was 1 speaker before me, and two after me. We had a different audience each day.
The crowd ranged from 80 to 120 people in medium sized conference rooms. At one facility we had a microphone available.
I came up for my slot and noticed the mike sitting there on the table, and commented to previous presenter on it. She said she noticed it, but she didn't need the microphone. I offered it to the speaker who came after me. He said he hates microphones and won't use them if he can at all avoid it. I, however, clipped it on an used it.
I guess I'm some sort of wimp.
The fact of the matter is I can fill the space without amplification. But that takes more energy. That drains me more by the time I'm done. I'd rather use the microphone, project my voice a little less, and focus on other aspects of my presentation.
I don't need the microphone, but I want it. And given the chance, I'll use it.
I guess I'm just not as hard core as the other speakers.