Trite aphorisms don't matter, but I don't think that means nothing does.

I really don't understand how you could come to that conclusion. Whether something matters or not is entirely subjective or depends on context. Like, what does that even mean? My happiness matters very much to me, but doesn't matter at all to someone who will never meet me, or to the orbit of the earth around the sun... Yet the mass of the earth objectively matters very much to its orbit around the sun, and to many other things that would be affected by earth having a different mass. Maybe you mean, does it matter to me personally? Even then, I can't possibly see any reason why it would have to be all or nothing. Some distant galaxy on the other side of the known universe doesn't matter at all to me and likely never will. The current temperature outside matters to me a fair bit though, because it'll influence how likely I am to want to avoid the cold, or how long I stay outside.

Like I'm just trying to figure out if you're actually trying to say something meaningful or just saying something vague and abstract to try and sound "deep".

Matters to whom?

Also, https://en.wikipedia.org/wiki/Denying_the_antecedent