There are a lot of reasons. But before I start let me say that I'll vote for Barack if he's the Democratic nominee. He would be infinitely better than John McCain.
1. He wants to bring people together. Give me a break! The only people he needs to bring together are the Republican Senators who will filibuster every piece of Democratic inspired legislation to death and effectively stop anything the Democrats want to do. Think he'll get the bloc-voting, filibustering Republican Senators to come over to the Democratic side? Think again. He'll either get nothing done or triangulate as Bill Clinton did. Instead of triangulation what we need is a President who will take on the filibustering Republicans and the legitimacy of the filibuster itself. This might spark a constituional crisis but so be it!
2. As nominee, the Republicans will generate all kinds of rumors about his African connections. Half his family lives there. Then there are the rumors about his lack of patriotism. The Republican smear machine will go to work on Obama. You can see they are ambivalent about who they'd rather run against because they've already developed a well-spring of hatred and demonization for Hillary over the last 20 years or so. They'll have to start from scratch with Obama, but they're already working overtime to make up for lost time.
3. As President, there will be all kinds of pressure on him to intervene in Africa. We've already got a mess on our hands in Iraq, that road to hell having been paved with bad intentions. We don't need another one in Africa, this time the road to hell being paved with good intentions. Mia Farrow, Steven Spielberg and others have been pressuring politicians to intervene there. And who's already there siding with the bad guys? China. They want the oil and they don't give a crap about who gets pushed off their land in order for them to get it. We don't need a confrontation with China in Africa.
4. Lack of political sophis-tication. We don't need Amateur Hour in the White House.
5. More susceptible to cooption and selling out. He'll want to triangulate with the Republicans as Bill Clinton did (a big mistake in my opinion) in order to get anything done. Republican pressure will undermine his agenda and determine the course of legislation. (Witness Bill Clinton with Gatt-NAFTA and signing the repeal of the Glass-Steagall Act which led directly to the sub-prime mortgage crisis.) Hopefully, Hillary has gotten beyond "triangulation," realizes the errors of her husband's ways.
6. Obama is more likely to pander to powerful interests. Hillary has been there, done that and has nothing to prove.
7. Obama still hasn't made his fortune; Hillary has nothing to sweat financially. This would make Obama more likely to sidle up to and be impressed by powerful financial interests.
8. Hip-hop in the White House? Oh, noooooooooo.