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DanielLC comments on Confidence levels inside and outside an argument - Less Wrong
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Anthropic reasoning only goes this far. Even if I accept the silliness in which zillion of Earths are destroyed every year for each one that survives... the other planets in the solar system could also have been destroyed. And the stars and galaxies in the sky would all be devoured by now, no? And no anthropic reasons would prevent us from witnessing that from a safe distance.
Here's a fun game: Try to disprove the hypothesis that every single time someone says "Abracadabra" there's a 99.99% chance that the world gets destroyed.
Perhaps rather than just causing a black hole, it causes a tear in space-time that expands at the speed of light. By the time you see it, you're already dead.
Of course, there's still the fact that early worlds would be weighted much more heavily, so this is probably about the first instant that you exist. And there's the fact that, if that's true, the LHC wouldn't decrease the expected lifetime of the world by a noticeable amount.
I feel vaguely disapproving of anthropic reasoning when it rewards elaborate and contrived scenarios over simpler ones with similar characteristics.