There was this Star Trek: The Next Generation episode that had the Enterprise caught up in a stampede of these one dimensional interstellar beings who were heading towards a Quasar or a Pulsar of some such thing that would immediately destroy them, and the Enterprise. The valiant crew of the Enterprise tried throughout the episode to make these beings realize that, if they continued on their current course, they would destroyed upon collision with the Quasar thingy. And yet, in the end, it was revealed that the Quasar is the one place in the universe that these beings wanted to go, even if it meant their destruction. Much like a moth to a flame, or a bug to a bug zapper, or lemmings to a cliff, sometimes beings have instincts to force them to take an action that will result in their death.
Republicans have spent decades, generations even, ranting on and on about cutting government spending. So now matter how politically damaging the coming Sequester Cuts are going to be for these Republicans, no matter how economically damaging they are going to be for the rest of us, they don’t care. It is instinctive. The Sequester Spending Cuts are the Republican’s long dreamed of destination: massive spending cuts at last. Sure, they may complaint about the cuts in military spending, or that this is Obama’s Sequester, but if the Republicans really really wanted to avoid the sequester it is within their power to pass legistlation today repealing it. The Senate will pass that repeal and the President would sign it. So the only reason they don’t repeal it is because the Sequester is the one place in the universe where these beings we call Republicans want to be.