Let me start off with this - Not all muslims are terrorists, not all muslims are bad people, so don't think I'm as narrow-minded as Mike is.
Okay, that out of the way.
These people (Islamic extremists, mostly) are barbaric. They won't stop killing each other and it will never stop. And, unfortanently, the Iraqi government has decided to take sides in this conflict, fueling even more secretarian violence.
They will kill each other at the firing of a pistol if given the opportunitty. It's been that was for hundreds to thousands of years.
Ask yourself this, what is there to fight for? When we see the Iraq Report this week, and it says the Iraqi government has not met a single benchmark, than it's time to ask ouselves what is going on and start thinking about a new plan for Iraq that involves getting our soldiers out from the middle of this civil war (but not a pullout from Iraq) and protect whatever oil interests we can in Iraq.