You sound like me a while back. I kept saying where's the beef? In the end none of those backgrounds are required to be POTUS. You can be a top executive and still run your company in to the ground, Exxon is a good example of that. You can have military experience and still walk in to a quagmire with eyes wide open. Or you can have none of those experiences and still make a great President. There is no set of experiences that make a great POTUS. Its how they deal with events that face them.
From the little I have seen. I like they way he handles himself. He is thoughtful it seems to me. And deliberative. And he seems intelligent. I only know him as well as you. But I have seen all of them play dirty except him. He doesn't seem to feel the need to attack people for advantage. Which seems mature for his age. And I like that way of dealing with situations. So as of right now I am going to give him my vote.
I am not a fanatic. I already have issue disagreements with Obama. But I think the number one issue is to stop the partisan gamesmanship. It has gotten out of control over the past 15 years or so. And someone needs to put an end to it. At this time he seems most able to do that to me. So I wish him luck.

End of rant.