How will a society without growth be flourishing?
A lot of people make the mistake of thinking that economic growth requires an increase in natural resource use, pollution and waste, when a lot of economic growth in recent decades has come from increased efficiency and services that have not led to more natural resource extraction.
The idea of humanity without a desire for progress and growth is romanticized by environmentalists and parts of an "intellectual elite", when in reality it will lead to a complete collapse of society and standards of living.