The purpose of natural selection, fine-tuning of physical constants in our universe, and of countless other detailed coincidences (1) was to create me. (Or, for the readers of this comment, to create you)

The optimization process that optimized all these things is called anthropics. Its principle of operation is absurdly simple: you can't find yourself in a part of the universe that can't create you.

That's not what "purpose" means.