This will be short as I'm on lunch break, but I really wanted to link to Ezra Klein's Wonkblog post about what's wrong with "come togetherism".
The article is well worth the read, and has a lot of the fine detail about just how far Obama has been willing to compromise, and just how zilch Republicans have offered in return. But the money quote is about the problem of blaming everyone for one party's stubbornness:
That breaks the system. It hurts the basic mechanism of accountability, which is the public’s ability to apportion blame. If one side’s intransigence will lead to both sides getting blamed, then it makes perfect sense to be intransigent: You’ll get all the benefits and only half the blame.
I had never really thought about it that way, that blaming Republicans is not only right, and feels good, but is good for America.