The anthropic principle isn't, at least to my limited understanding, an attempt to explain why life has occurred on this planet. Rather, it is a way of addressing a related issue; namely, that our very existence itself can muddy the waters when considering matters pertaining to the existence of life on this planet. To me, it seems a pretty sensible way of considering human origins while denying any particular necessity that the very unlikelyness of our existence have a bearing on spiritual questions.
Humans can see patterns in porridge. While it is true that a million-to-one shot can seem spiritually significant to those for whom it comes through, the fact remains that million-to-one shots happen
all the time.
I'd argue that a supernatural entity isn't particularly helpful when it comes to explaining our presence on this planet. I don't think it’s any more satisfying or profound than a simple matter of probability. In a universe as vast as this, it is almost inevitable that life, complex life, even sentient life is going to happen occasionally. (It is probably best that we leave aside the problem that we don't have any idea of the probability that intelligent life will arise on a given planet. Who knows? It could be much more or less likely than we predict. Let’s just call it pretty damn unlikely.)
Regardless of this, it can't be denied that when sentient life does occur, it’s going to feel pretty bloody pleased with itself (and/or with whatever deities it happens to revere at the time). However, those societies which are sufficiently advanced to recognise the stellar unlikelyness of their own genesis should also be in a position to recognise that in and of itself, this low probability can't have any bearing on the existence of supernatural, omnipotent entities like Allah or Crom, just as no supernatural entity is needed to explain why my dad's friend won the national lottery. It's just down to chance. The principal difference is that we are in a better position to scrutinise a lottery win than the birth of life on this planet.
Edited by Tusko, : No reason given.
Edited by Tusko, : whoops fixed italics