[slibhb]

> I find it kind of funny that humans are so confident that our models of reality are correct that we truly think it's more likely there's just hidden "stuff" than there's just something hugely wrong with our idea of what the universe really is.

> Obviously, I don't have an explanation myself, and I understand that we can only work with the evidence we have, but I think it's a sign we need to radically rework our basic assumptions about reality, and not just look for our missing keys...

Looking for missing keys is fine. This is how models are validated or invalidated. For example, Neptune's location was predicted in the 19th century before it was observed due to discrepencies in Uranus' observed orbit and what was modeled.

There are alternative theories that could replace dark matter/dark energy (e.g. MOND for dark matter, inhomologous cosmologies for dark energy).