Which dark age? If one looks at the last hundred years, there was the quantum revolution, and the development of the Standard Model of particle physics. The SM started in the 1970, and where were quite a lot of improvements (more quarks, and neutrino masses) after this, so that even the last half century is a full success. Don't forget that revolutionary theories, like quantum theory or the SM, happen extremely seldom. And that for every successful theory there have to be a large number of approaches which fail. So, we have quite a good time.
There is, of course, the general danger of degeneration of science because of the extreme job insecurity of modern scientists. This is not specific to modern physics, but to science as a whole, and can be solved even by a a few states who start to use a more reasonable system, which supports freedom of science by giving scientists secure jobs.
The hope for the future is also available. We have sufficiently simple open problems, like the quantization of gravity and the unification of all the forces into a single theory - simple because there are already proposals how to solve them.