wastefulness

(noun) the trait of wasting resources. Synonyms: thriftlessness, waste. Examples: "A life characterized by thriftlessness and waste." "The wastefulness of missed opportunities."

(noun) useless or profitless activity; using or expending or consuming thoughtlessly or carelessly. Synonyms: waste, dissipation. Examples: "If the effort brings no compensating gain it is a waste." "Mindless dissipation of natural resources."