The mental image most of us have of a successful entrepreneur is Steve Jobs - an eccentric who was deeply passionate about what he cared about; and extremely idiosyncratic. He was able to do things which everyone else thought was impossible , and we have started believing that these are the mystical ingredients which every founder needs.
It's true that talking to charismatic founders can give you a high. They're very charming and persuasive. They are great salesmen, and can get you buy to into their dream.
However, over time, I've actually come to respect the thoughtful, mature founder a lot more.