That’s a valid point.
Also, focusing our research interest mainly in understanding exactly how the biological systems function may lead us to breakthrough treatments for currently incurable diseases and/or the development of preventive dietary or lifestyle recommendations accurately adjusted to individual differences and/or specific issues.
Also we can come up with interesting engineering ideas after observing and understanding the functioning of certain biological systems in order to produce equipments, devices, gadgets, tools.
The biological systems aren’t well documented yet. Documenting their functioning thoroughly should be pursued by research scientists. Fortunately it seems like most of them realize this already. At least that’s the impression one gets from reading their papers.