Frankly, because he's a racist islamist demagogue who got elected on a false premise of "changing the way politics is done" - when he has undoubtedly been the most hyperpartisan liberal president this country has ever had.
And that may be the cup of tea for the far-left, the problem is he portrayed himself as a completely different person.
He did change DC, but not for the better. The country is more divided than ever and more polarized than ever. There's more racial tension than ever.
More racial tension than Reconstruction?
You know, it's just a ludicrous give-away, the sort of thing Reaganfan would say. 'Just look at this increased racial tension! Thanks Obama! Uppity blacks need to respect the police!' Yes, yes; we understand. The "racial tension" is worse than ever, because for the first time you feel like someone from the Other race is going to take away your privileges. What a difficult time this must be for CountryClassSF.