Is John McCain returning to the Senate as one final chance to get back at Barack Obama for beating him in 2008?   Could that be the reason that he is setting fire to the rest of his public persona by voting to throw tens of millions of Americans off of health care, leading to the deaths of tens of thousands, at the very least?   Even as he has full coverage as a member of the United States Senate?

I think the answer is that he is that petty.  I think if that's the conclusion others come to, he fully deserves it.