My favourite physicist, even over Einstein and Newton, is Richard Feynman. I have always admired the work of the former two of course, but it was Feynman that convinced me that physics could be fun, and that in order to contribute you don't have to be somehow in touch with God, or superhuman. You just have to be a puzzled human being. I was pleased to discover this, since I happen to be such a human being.
Feynman told a story in his book: Surely You're Joking Mr Feynman? (p81), in which he met a painter in a cafe. This painter claimed he could make yellow paint out of red and white paint. Feynman always loved practical guys and he wanted to believe him, but he was fairly sure that something was screwy. Surely mixing red and white paint would make pink? He asked the painter to demonstrate, so the guy started mixing white and red paint, and the result was always pink. Eventually the painter got annoyed: "Hm, I'll just add some yellow paint, to sharpen it up, and then it'll be yellow". "Aha!" said Feynman, "Sure you can get yellow if you add yellow!".
Now forgive my boldness but I think dark matter physicists are doing something similar. Consider: we had general relativity in 1915, and this theory has predicted a few things well at high accelerations (close binary stars, gravitational lensing, GPS corrections), but it did not predict the rotation of any galaxies at their edges which are in a low acceleration regime (the edge stars all orbit far too fast) and since the cosmos is composed of nothing but galaxies this is a big deal. Also, general relativity did not predict cosmic acceleration. An even bigger thing to miss. Rather than dispute general relativity, as at least some of them should have, they have almost all added a lot of yellow paint: in the case of galaxies they have added huge amounts of dark matter arbitrarily, with the express purpose of making general relativity work. In the case of cosmic acceleration they add dark energy which is similarly arbitrary and designed to save the theory. This amounts to an addition of 96% yellow paint. Karl Popper, who assessed the history of science, warned against this kind of thing and concluded that one should not try to save a theory by adding further invisible elements to it. By the way, MiHsC explains both these huge anomalies without any yellow paint (it has no adjustable parameters).
To be clear, I don't blame most of those in the dark matter industry for this. They follow dark matter simply because they have to eat, and that's what the funding system is solely directed towards at the moment. Luckily, MiHsC doesn't need any funding. My labs and supercomputers are pieces of paper.
Feynman, R.P., 1985. Surely You're Joking Mr Feynman! Vintage.