Since, apparently, no one can interact with George Bush on an adult level, all those around Bush end up behaving like pandering adolescents. John McCain included. McCain wanted to be president more than he wanted to keep his dignity by refusing to become one of Bush's sycophants.
John McCain is still not as crazy as the rest of the Republican line up, but he has shown his willingness to prostitute himself before the Bush mafia. He celebrated with Bush as New Orleans drowned. And that photo of his submissive hug of Bush is really really creepy.
Why would anyone trust McCain after his submissive, pandering performance over the last few years?