That existence is temporary, nothing really matters and our measly pursuit of accomplishments and accumulation of money, fame and materials are equally a big waste of time as some ppl may say playing video games, watching tv or bird watching is.
We're all alone floating in darkness in a tiny little rock closed off from the rest of the universe, not sure why we exist, but stuck in a constant cycle of competition and survival no different than the animals we look down upon.... and we're all simply making all this sh1t up as we go along.
Basically nihilism is reality. But not everyone is ready or capable of accepting this which is understandable. (it goes against everything that was drilled into our heads since infancy...and frankly its not pleasant.)
That realization made me less judgmental and more emphatic to religious people in their inaccurate pursuit to make sense of this
At the end of the day we just want concrete answers and to be told everything will work out and be okay and such philosophies scratch that itch.
then u die and everything gets erased upon death like an Etch a Sketch, All memories, skills accomplishments, talents.....gone forever. thus nothing matters.
but if you're selfish enough to drop a seed then the existential cycle just continues on for another generation
and the curse reigns on.