The Basis for the Uniformity of Regular Laws of Nature

It is said that if metaphysical naturalism is true there is no ultimate meaning, ultimate morality, nor is there a basis for the uniformity of regular laws of nature. It's correct there is no ultimate meaning nor is there any ultimate morality, even if there is meaning and there is morality. Meaning and morality do not depend on anything ultimate. I should still love my wife for consequentialist reasons even if there are no ultimate reasons. I even find the notion of "ultimate" to be a bit meaningless. Based on this and as a non-scientist let me throw out one suggestion about the uniformity of nature to see the reaction. In the same way there is no ultimate uniformity of nature either. There is uniformity which we can rely on for science. But there is no ultimate uniformity, whatever that is, because of the quagmire of quantum mechanics. On a microscopic level it's a bizarre world.