Well.. as I said, you have to stay with a winning strategy until it fails. I tend to agree with what you say except for your last sentence. We've had many different economies based on many different principles and we've always had crashes; there will be crashes in the future. "I have almost nothing to worry about." is a dangerous approach given that you have no way of knowing all the factors in play in the market. But again I say, in the meantime you're justified in sticking with a winning method.