"Everything not forbidden is compulsory." – Murray Gell-Mann (from T.H. White)
Suppose we grant this claim as an axiom. Then, from the fact that X happened, we may deduce that X was compulsory.
But that doesn't tell us why X was compulsory. It doesn't provide us with an argument showing how the happening of X was a compulsory (or even probable) consequence of self-evident premises. Gell-Mann's axiom doesn't tell us why X had to happen, or even just why X happened — never mind the "had to". So it doesn't answer the question "Why does something exist instead of nothing?".
As I posted below, I'm not planning on continuing this specific discussion. However, if you're interested in continuing to discuss the general topic, I recommend heading over to this discussion topic that I just started, which addresses some of the same issues in what I feel is a clearer way.
This post grew out of a very long discussion with the New York Less Wrong meetup group. The question was, should a group dedicated to rationality be explicitly atheist? Or should it make an effort to be respectful to theists in order to make them feel welcome and spread rationality farther? We argued for a long time. The pro-atheism camp said that, given that religion is so overwhelmingly wrong on the merits, we shouldn't allow it any special pleading -- it's just as wrong as any other wrong belief, and we'd lose our value as a rationalist group if we began to put status above truth. The anti-atheism group said that, while that may be true, it's going to doom us to be a group exclusively for eccentric nerds, and we need to develop broad appeal, even if that's hard and requires us to leave our comfort zone.
Things got abstract very fast; my take was that we need to get back to practicalities. Different attitudes to religion have different effects on different types of people; we need to optimize for desired effects and accept what tradeoffs we must. We can't appeal equally to everyone. So I came up with a sort of typology.
The Four New Members
Annie