Choose a hatchback over a traditional coupe when the same car must regularly carry passengers, shopping, and awkwardly shaped belongings. A rear opening that lifts with the glass can make bulky objects easier to load, while folding rear seats let you trade unused seating space for cargo length. A five-door hatchback also gives rear passengers their own doors.
Those advantages depend on the actual cars being compared. Some coupes have a hatch-style rear opening, and a three-door hatchback still makes rear passengers enter through the front doors. Treat the labels as a starting point: the useful choice is the layout that handles your repeated journeys with fewer compromises.