I should believe him?

Why does John Kerry think that I should believe him? I can list the reasons I shouldn't: The "magic hat", Christmas in Cambodia, the signing of the 1st Gulf War agreement, meeting with the UN Security committee, the 16 point buck, the Boston Marathon, I could go on and on.... So why should I believe that he has a better plan? That he could do a better job in the White House? Update: Forgot that Red Sox game.