Humans have a preference for simple laws because those are the ones we can understand and reason about. The history of physics is a history of coming up with gradually more complex laws that are better approximations to reality.
Why not expect this trend to continue with our best model of reality becoming more and more complex?
I think the dichotomy between procedural knowledge and object knowledge is overblown, at least in the area of science. Scientific object knowledge is (or at least should be) procedural knowledge: it should enable you to A) predict what will happen in a given situation (e.g. if someone drops a mento into a bottle of diet coke) and B) predict how to set up a situation to achieve a desired result (e.g. produce pure L-glucose).