I don't blame an old guy for losing his mind. It happens, and it's sad.
I do blame the people around him who refuse to make him stop inflicting his crazy on an unsuspecting public. "John, you have been in the Congress for 27 years. You are a 73-year-old millionaire several times over. You've had a good go. It's time to give somebody else a chance. Don't let the end of your career make a mockery of the beginning."
That nobody can do this is evidence that, in the McCain camp, runaway egotism isn't just a problem at the top.