For those who prefer not to have a Divine Engineer tuning the dials, the alternatives are unpalatable. The most natural are multiverse theories, according to which all possible universes exist simultaneously and we simply find ourselves in the one that makes our existence possible. This is not out of the question, but there is no actual evidence for it. It is just an “atheism of the gaps,” calling imaginary entities from the vasty deep to plug a theoretical hole. The postulation probably involves gods, too—maybe not the omnipotent creator of the Abrahamic religions, but surely some unlikely combination of quantum fluctuations could produce Zeus and his colorful activities? Zeus is just a very big superman (physically, of course, not morally) up on Olympus and thus something that physics could manage to account for. The other possibility is to hope that there is some unknown mathematical reason why the constants are locked in as they are—again, a possibility, but one for which there is currently no other evidence.
- Amir D. Aczel
You've started with a supposition and worked backward. That's why you've appealed to the supposition using cherry picked quotes, even from a lifelong atheist.