Sarah Palin resigning as Alaska's governor is going to be the worst thing that ever happened to the Republican party.
The reason is that she has become a raving lunatic and it's not good to have a lunatic as the head of your party. She's like a spunky little girl acting all adult. Everyone is too embarrassed to point out to her that she's a royal pain. We don't want to hurt little Sarah's feelings so we'll just smile and nod.
Here's the analysis to prove it:
Sarah Palin's Gradual Descent Into Incoherency
Referring to her second resignation speech is the money quote.