
Harnessing chemical energy is amazing, but it is not, of itself, life. The macromolecules can, improbably, form and assemble into structures that interact and cooperate with each other, but these will fall apart, in time.
Only when these assemblies developed the ability to replicate themselves, would we call the result Life.
The apparatus for recreating macromolecules is highly complex. The interdependence of proteins and nucleic acids is breathtaking, and is truly the miracle of life.
Once assembled, the force of life consumed the planet.
The living units of life, cells, became more complex, allowing multicellular beings to form and the diversity of life became richer still.