We seem to aim at so little today, to have such small interests in mind. No wonder the biotech visionaries have gained a hearing: They claim to be going somewhere. Where they want to go is the destruction of human nature, but at least they are calling us to something beyond ourselves.
To be a religious believer is to know that the hungers of the human heart will not find fulfillment without God, but even religious believers benefit from goals short of the ecstatic vision of the divine. A people without any temporal horizonswithout any historical purpose or vision of the futuregrow enervated and decadent, and they begin to follow strange gods, who promise them meaning.
The science-fiction writers had it better: Space is the obvious next horizon for human beings. Want to diminish the biotech revolution to its proper role as a curer of disease? Offer a more exciting goal. Build a rocket ship, and fly it to Mars.