There is that classic line from "Pulp Fiction": "I'm gonna get Medieval on your ass!" That could be John McCain's campaign slogan. Here is a man who used to be humble about his military service, now he beats us over the head with it. Here is a man who used to not be a war monger, now he is desperate to get us into any and all wars possible. What does McCain have to offer our nation? Zero.
McCain's time has past. His only real shot at the Presidency was in 2000 when he let Bush walk all over him. And, since then, he has bowed at King George's feet, completely supporting the eternally insane Iraq War. McCain's temper is legendary. He blows his top at the drop of a hat.
Does this remind you of anyone? How about Bob Dole? Yes, McCain is our generation's Bob Dole: angry, past his prime, has no ideas that will help our nation, and is essentially inert. McCain will meet the exact same fate as Dole. He will appeal to only those Republicans who only want a Republican in the White House. Anyone else will not really consider McCain as a choice for President.
John, you're too late, and you don't have a shot. Just pack your bags and go back to the Senate. There, the only people who will have to put up with you are those who watch C-SPAN.