I think he is scared shitless. I thought that he was a bit of a pariah in the Republican party, being of the minority not involved in drug deals and toe tapping and other unseemly misdeeds. It seems that he was picked for point man because he is the last man standing. I liked him a few years ago when he was actually questioning the invasion etc. Maybe that is the real McCain and the one that is before you now is just another puppet of the money men.
I heard that his wife is stinking rich, perhaps she put him up to it, and all he wants is to go golfing and fuck about at home in his workshop. Who knows?