Insanity is also doing something different for the sake of doing something different.
Keep in mind about a month or so ago I was completely undecided on the presidential election. I gave both a chance and a clear "lesser of two evils" soon emerged.
Personally, I'd rather have four more years of the same policies than elect someone I have no idea what he stands for or how he'll handle any issues that may arise.
I may disagree with him on some moral and ethical issues, but when it comes to economics, taxes, and education - issues which matter very much to me - the choice to vote Obama was clear as day. On those key issues, Romney has no ****ing clue what he's doing. Romney also lies and flip flops far too much to be trusted.