There are many interpretations of this mythology including Demeter threatening Zeus to kill all vegetation on Earth if Zeus does not help in releasing Persephone from the hands of Hades. Zeus, ~~ not wanting to anger his people complied and convinced Hades to release Persephone.
Another version is that Persephone on her on volition remained with Hades so she could bring brightness and light to the souls doomed to spend eternity with Hades.
Regardless how you perceive this time of the year, enjoy the season and harvest your love for your fellow man. May your cornucopia of life be full of spiritual nutrition
Be well in Love and Light!