i believe that if you look very deep into biology, chemistry and every science i guess, you would find that almost everything in the universe, especially life, is so perfect and precise that basically, every little atom ends up having a meaning, or a purpose, rather. every single time you breathe, billions of cells, let's say, wheels turn flawlessly in your perfectly engineered system, making every single pattern, bond, chemical reaction in this mechanism possible and needed for you to live another second.
if we're talking about the meaning of life, there is none, but there is also everything and everyone that has a point in this equation that keeps life thriving. we have no free will (in my acception, not in the real sense), because everything is the effect of a cause, and the cause is just a sum of circumstances we find ourselves in. so no matter what we do or believe, our given meaning is that we are here to reproduce and keep the cycle going. we are, as our cells, tiny wheels in the universe that spin so the mechanism of life can go on.
if we're talking about other trivial stuff, they don't matter, nothing in what we do matters. there's no divine point to any of this. it's all just coping mechanisms and distractions. we can give meaning to them, as in a sort of language to help us understand how our own little worlds work and what makes us happy, but they don't have an intrinsic meaning. now, it depends on how you look at it, because every single fucking thing in existence actually matters in every way perceivable, because every little decision we make, like a butterfly effect kind of thing, can be argued that it affects everything else in life's cycle, causing it to keep going no matter what. even if we ctb, we can cause certain people to become prolifers, let's say, further reproducing and so on.
it's a really complex subject and this is just my opinion on it.