If you actually cared about what a community organizer is/does (I honestly don't know)
+10 points for having the balls to admit you don't know what qualifies Obama to be President.
I can't speak for others, but his better judgment on the key issues of the day are what qualifies him to me. Sure, experience is great, but it's not everything; I'd rather have someone who is right on the issues than someone who has experience any day of the week and twice on Tuesdays.
In all fairness, what little of judgment I've seen, makes me less likely to vote for Obama. He's associated two people, that he knows (Wright and the Catholic Priest), that he's had to remove. He's showed poor judgment in his dealings with Rezko.
Now, none of those things are major, IMO, but we don't have a lot of examples of his judgment. We have Obama saying, "I was against the war, but I didn't look at the intelligence reports either."
Both comments are demonstrably false, historically, since we had substantially more experienced presidents prior to 1856 (Harrison, van Buren, Jackson, and Tyler come to mind) and at least one (Tayor) who never voted in his life.