I've more or less given up on the notion that Republicans are at all interested in serious governance. I think they have made it quite clear over the past decade that they are interested in one thing: the accumulation of power.
Sometimes, though, it's good to hear someone else's take on the position, just to give a better explanation for that determination. To that end, I direct you to read Steve M. at No More Mister Nice Blog, who has written quite well on this topic here, building on Andrew Sullivan's post here.
Both reads are good.