Efficiency and focus - these lead to a life of meaning and happiness. Time, money and thought spent on superfluous things leads to a dead end. What are we doing to benefit society? Are we raising decent children? Are we helping others in our community? Are we doing no harm?
Life with a purpose and minimal time spent on low-value-add activities should be the aim for all.
(see also Citadel, p. 55, 187)