Until people who are capable of cultural, scientific and intellectual progress learn to tolerate those less fortunate themselves, or even those that choose to make different types of life choices then we're all going to struggle, frankly. Your comment betrays quite a bit of hostility.

yeah, that's pretty much correct. the whole point of dark matter is that it's simply something we can't yet see or directly measure. it's not be confused with something like anti-matter (which definitely has fundamentally different properties to normal matter), and it's not really useful to talk about it in terms of dark matter vs. normal matter. for all we know dark matter could simply be vast amounts of non-luminous normal matter, that we can't directly observe, but can only in-directly measure via it's effect on luminous matter, for example gravitational lensing or rotational velocities of galaxies.