Same here. I like DH (though I think some of his supporters are beginning to approach the realm of cult-members, if their verbiage is to be believed), but he is not going to take the nomination. It's just not going to happen, I hate to break it to you. I hope I'm wrong, because he would be my "natural" first choice, but I have to be realistic as well as idealistic.
Frankly, I'm to the point where if FDT doesn't take it, I'm dropping politics altogether. With Romney, McCain, or Giuliani at the helm of the GOP ticket, it's just not worth bothering with anymore. I'll live my life the best I can before God and man as self-sufficiently as possible, and the rest of the country can suffer the consequences of its own mistakes.
If the GOP goes with any of those three turkeys, I'm guessing my presidential vote is a write-in (so my ballot isn't thrown away as an undervote).