Can't win a race with a moving finish line. It's never enough, we always want more

We could live completely on renewable energy if we lived like our grandparents, we don't do it, because we want more, more food, more gadgets, more services more entertainment, more tech, more money, more health, &c. it never ends, because we don't have a goal. "get healthier and richer", the vaguest goal you can come up with