It may be that in 20 years from now that is where we'll look back and say we have made huge advances. What I call the wet side of nanotechnology is the machinery of cellular life. In fact there are some things that biological systems have not yet been able to figure out, even after four-plus billion years. One thing is conducting electricity the way that metals do. Others are thermal conduction, and strength and toughness.
Bones are very impressive, and so are teeth.
Almost an alien thing. Because it conducts electricity. It brings those properties you cannot get from other organic molecules. And it's still carbon, so it has organic chemistry. Things you just can't do with bone and wood.