This world down here us only a temporary physical world that every person has a mission to complete here to make them ready for the true world above where a person gets to serve Hashem face to face….
Like it says in Pirkei Avos this world us only a sidewalk to the real world above…..
Some people it takes 120 years to accomplish their mission in this temporary world and other a accomplish it in a few years or even months and are ready for the olam haemes above to serve Hashem