In the future there will be no more human beings. This is not something we should worry about.
Much of today’s scientific research may enable us eventually to repair the terrible vulnerability to which our present state of evolution has exposed us. It is widely thought inevitable that we will have to face the end of humanity as we know it. We will either have died out altogether, killed off by self-created global warming or disease, or, we may hope, we will have been replaced by our successors.