Are there any known compelling reasons why our universe is governed by relativity instead of Newtonian physics?
I recognize that an infinite $c$ would be a problem, so I'm not asking about that; I figure that so long as you still conserve energy and momentum etc., everything would be limited to arbitrarily large but finite speeds, ensuring that causality remains intact and preserving our computationally tractable universe.
I suspect that there are lots of instances where relativity informs our understanding of the operation of stars or subatomic processes or what have you, but which if any of those kinds of things couldn't be more easily explained with a Newtonian outlook?
In case it helps, my motivation here is to try and understand whether relativity makes sense from an Occam's razor perspective. And I know that relativity fits all our observations beautifully, and that it's all implied once you accept that physics are invariant in any reference frame, but that all doesn't strike me as the simplest a priori arrangement we could have had for a universe, and I find that possibility unsettling.