Gravitational lensing is exciting because it is (in a sense) a way to view the dark matter directly. The dark matter between an emitting object and the viewer bends light.
Have we completely given up on black holes? Again, 1970s "Cosmos" talking here...
You know, it would probably be terrifying to discover that black holes are responsible for 85% of the mass of the universe. Dark matter is way more reassuring -- we aren't living in a dying universe where everything is being devoured and it is 85% gone.
