Should medical science always seek to prolong life?

In 2013, Google announced the creation of the
California life company, Calico, which aims to reverse engineer the biology
that controls life span. It is looking into age-defying drugs and genetic
engineering to enable people to lead longer and healthier lifestyles.  The rise in global average life expectancy,
now approaching 70 years, can largely be attributed to advancements in medical
research. It has developed cures and vaccines for myriads of once deemed
“untreatable” diseases. However...