You are certainly entitled to your opinion about Dr. Carson. I don’t think a wall with plaques and memorabilia is a big deal. Given his humble beginnings, I’m sure he is very proud of all of that. Perhaps he has become too proud, as you think. I think he’s a talented guy who thinks he can win the Presidency, and is trying to do so. Many of the guys running fit your description, though, of people who are very self-focused. Trump, especially, cannot help himself but is so insecure that he must remind everyone every 5 minutes how much he is worth. Still, I’d vote for Trump in a nanosecond over Hillary or anyone the Dems will probably offer up.
Three candidates have a legitimate shot at the nomination.
Trump
Cruz
Rubio (hate to include him but it’s fact)