We, humans, are still evolving. The fields of science, biology, and the human brain have just scratched the surface. We are still dying of bacteria and viruses. We are vulnerable like our previous generation. We are still working on finding the meaning of DNA and what it holds uniquely for us.
In short, we are living in so many unknowns. One thing which keeps us going out of all these is our will to live and hope for a better tomorrow.
We have to keep living in the world of unknowns.