Why, because, they think they have confidence, but it is not often commensurate with their skill. They don't think they have to surf inside with the kids. I believe I fit into the Barney's category when I started. I will say though, I spent many days in the white water. Sometime though, I may tell you of my absolute first surfing experience.
Kooks though are insufferable.
They may even surf well, but are rarely reformed. They are kooks. They can't be explained, but you know them when you see them. The swell was pumping. It's a fickle break.