This makes a lot of sense to me...
Why does a man who is sitting on a huge fortune want to be president of the United States? What force drives someone in late middle age to want the burdens of that office? (Have you noticed how the really, really rich don't want to run for office; they want to own the office-holders.)
Well, Romney doesn't want to be president of the United States; he simply wants to become president of the United States. He wants the office. He doesn't want the job.
Evidence of this can be found throughout the organization of his campaign. Everything he says and does is aimed at winning the office, but he never says anything concrete about how he would accomplish his objectives once in office.
Candidates like to talk about what they want to do. They don't like to talk about how they propose to accomplish those objectives....but that's what leaders do. And, in this case, there's not much to talk about because there aren't any palatable solutions, and no one is going to vote for someone who promises to raise taxes AND cut spending, which is the only way we are going to get out of this mess.
No one with Romney's business background can be as stupid as he pretends to be. When he espouses the Republican Party line about how cutting taxes will revive the economy, he knows that he lying because he knows that the trickle-down theory is a fraud. Since he obviously knows that the Republican economic policy is doomed to fail, the fact that he is willing to campaign on that platform anyway indicates that he's more interested in winning than he is in ruling.
But that still doesn't answer the question of why Romney wants the job.
So we are left with this conclusion: he wants the role, not the responsibility. That's why Paul Ryan is on the ticket, to take over when Romney bails out, as he will.
The reason why is simple enough: He wants to be president because he was emotionally devastated when the father he apparently worshipped failed to win the Republican Nomination for President in 1968, losing the nomination to Richard Nixon.
Unlike Mitt, George Romney was the real thing, a genuinely modest self-made man who grew up in the rough, pulling himself up from his family's genteel poverty to become a successful businessman, only to give up his highly lucrative position as Chairman of American Motors, a company that he had helped build from the ground up, to become the very successful and very popular Governor of Michigan.