[deniscoady]

If you are willing to accept multiverses then isn't this solved by the Anthropic principle where the speed of causality (or mass of the proton) is what it is, simply because it can sustain the evolution of eventual observers?

I don't think the numbers independently are valuable, but together the constants of physics are tuned to support life. To be honest, I dislike the Anthropic principle as a generalizable cop-out, but it nonetheless works.