Desire propels life. All desire is aimed at enjoyment. A most abiding desire is the will to live: to continue the entertainment. Life could not have evolved or be sustained without this will. Multicellularity could not have arisen without reliable relations between cells – dependability ultimately based upon will to live.
The mind uses desire as a tool of enslavement: forming attachments based upon what mind instructs is important and keeping focused on attaining an endless stream of imagined satisfactions.