Let me lay this out clearly. First, dark matter isn't a theory in the traditional sense. It's a placeholder. We invented this invisible substance to explain why galaxies spin faster than they should. That's not a theory—it's a patch. Second, every direct detection experiment has come up empty. For decades, we've built sensitive detectors underground, in space, everywhere. Nothing. At some point, the absence of evidence becomes evidence of absence. Third, alternative explanations exist. Modified gravity theories like MOND explain galactic rotation curves without inventing new particles. They're not perfect, but they make testable predictions—something dark matter hasn't done. I'll grant you that MOND struggles with things like the Bullet Cluster. But here's the thing: dark matter fails there too unless you keep adding new parameters. We're not dealing with a successful theory—we're dealing with a hypothesis that keeps needing rescue. When a model requires more invisible matter than visible matter to work, and we can't find any of it after 50 years, it's fair to call it a failed approach.

Let me address this practically. First, the Bullet Cluster is dark matter’s best argument, and I’ll admit it’s compelling. But one strong piece of evidence doesn’t rescue a theory that’s failed everywhere else. We’ve spent billions on detectors, and after 50 years, we’ve got nothing. That’s not frustration—that’s a pattern. Second, you’re right that MOND struggles with the Bullet Cluster. But MOND is also a simpler model that explains galactic rotation without inventing a new particle. Dark matter needs extra parameters to fit every new observation. That’s not a theory—that’s a moving target. Third, here’s my main point: dark matter hasn’t made a single successful prediction that wasn’t already baked into its design. It explains what we see, but it never tells us something new. A theory that can’t fail isn’t a theory at all—it’s just a story we keep telling ourselves. We need to admit when an idea has run its course.

Here's the thing: if dark matter has predicted everything so perfectly, why does every new experiment tighten the screws without finding anything? Let me be direct. One, you're right that neutrinos took decades. But the difference? Neutrino theory told us exactly what to look for—mass, interaction rates, everything. Dark matter gives us a moving target. Every null result, the particle gets redefined to be harder to detect. That's not patience. That's unfalsifiability. Two, the Bullet Cluster. I'll grant it's dark matter's strongest evidence. But MOND proponents have actually proposed modified gravity explanations for it too. They're still developing, sure. But dark matter also requires tuning—how much, where it clumps, how it behaves. That's not a clean prediction. Three, the CMB and structure formation aren't unique to dark matter. Modified gravity models are catching up. Meanwhile, dark matter keeps failing direct detection. After 50 years, calling it "unfound" instead of "absent" is faith, not science.