Recently there are more and more amazing results in techniques allowing the visualization of life at molecular scale. Instead of the old story about soups of species of molecules, now we can see individual molecules in living cells , or that the coiled DNA has a complex chemical configuration, or that axons and dendrites interact in a far more complex way than imagined before. Life is based on a complex tangle of evolving individuals, from the molecular scale onwards.
To me, this gives hope that at some point chemists will start to consider seriously the possibility to build such structures, such molecular computers  from first principles.
The image is a screencast of a chemlambda computation, done with quiner mist.
 Li et. al., “Extended Resolution Structured Illumination Imaging of Endocytic and Cytoskeletal Dynamics,” Science.
 Structural diversity of supercoiled DNA, Nature Communications 6,Article number:8440doi:10.1038/ncomms9440,
 Saturated Reconstruction of a Volume of Neocortex, Cell, Volume 162, Issue 3, p648–661, 30 July 2015
 Molecular computers