Replies like these are a clear symptom of how terribly sick our culture is. Nietzsche truly saw it coming.
> any assumed meaning of our existence only matters while we're alive. [...] The world can and will go on without us, and that includes the people closest to us at our final hour.
Such a self-centered and cynical way of looking at life. The world does not go on without "us". We are the utmost expression of nature and, quite literally, the legacy of those who came before.
I hope we can figure out a way to stop this self-indulging materialism. I understand that believing that nothing truly matters is quite freeing for the selfish hedonist, but it's about time we regain a sense of transcendence.
> but honestly it felt like coming home, even though no such home exists, and no one is there to return to it.
Truly, this is a load of non-sense. You have no way of knowing. Why be so deliberately obtuse on that we don't have answers for? Why have we stopped asking the important questions?
You seem very nihilist, and frankly, ugly inside. Why so critical of other's beliefs?
Choosing to not have a mystical outlook on life is not indicative of some kind of moral sickness. Being a materialist is not wrong, either, as you clearly imply. The parent "has no way of knowing" - as you say, and I agree with you. But neither do you, so why be so strident in your denouncement?