Probably an unfair thing for me to say. But they do seem to be driven to the profession for some reason.
I am an outside observer, probably like you. I just call it as I see it. Most "mental health professionals" I meet are strange. I know one whose kids are goth drug addicts and she walks her cat around the neighborhood on a leash. Another I know has the worst B.O. you ever smelled. Another I know is on his 4th marriage. I could go on.....