Why should I vote for Obama?

I'm pissed. Senator Obama's vote today in favor of the FISA bill has completely erased whatever goodwill I might have had for him.

OK, all you Obama fans out there, here's your chance. Tell me why I should vote for the man who just voted in favor of further eviscerating the 4th Amendment and my civil rights.

Don't bring the boogeymen of the Republicans and McCain into it. I'm not looking for reasons to vote against him or his party. I already have plenty of them. I'm looking for reasons to vote for a candidate.