Years and years of voting for the lesser of two evils. I'll paraphrase Ayn Rand. The lesser of two evils is still evil. If you are offered a plate of food with a lot of poison and one with only a little poison, which should you choose? The obvious answer is neither since they both contain poison. Go out and find your own, non-poisoned food.
Ayn Rand was a good pragmatist, which is not what the Libertarians are about.