A small note: the anthropic principle doesn't make us "lucky" to exist in a universe that supports life, quite the opposite. The probability of life coming to existence in a place (universe, celestial body, whatever) that doesn't support it is zero. The fact that we exist in a place that supports life is simply due to the probability of it happening here is >0, therefore we're here only because statistics determines that we can't be anywhere else. It's not luck, it's simply a statistic outcome.