I think that many Christians did not vote in 2000 because of "uncertainty". Maybe they could see that George W. Bush sounded better, but they were not sure they could fully trust. As you know, often politicians promise many things but don't deliver. Bush seemed the best candidate, but was he actually the best? Many people had doubts that prevented them to cast their votes. That's insane! As opposed to the other choice, Algore???
Those people sitting out the election for the reasons you sited above was a direct endorsement of Algore. Absolutely stupid reasons. It's one thing to feel that way, but actions speak louder than words.
Those people can thank US, who voted for Bush, who had no doubt he was the right candidate for being in the White House today.
You are right. It was insane! People had two choices: Bush or Gore. However, some people are so insecure that they did nothing. They voted for no one. Neither for Gore nor for Bush. As you say, it's insane. By doing that they did more harm than good.