I've found even after nearly 30 years of doing this, there are all kinds of new surprises that rear their heads at various times and I truly believe that 51% of the images, success takes place in the darkroom.
It was amazing to watch him in the darkroom at an advanced age, still get excited when the results were pleasing. He still struggled like we all do in the darkroom and he struggled behind the camera, and when he had a success he was beaming.