Whether you purchase whole bean or ground coffee, there are things to consider. Those things are freshness, control, and convenience.
Whole beans will often give you a fresher cup because the coffee’s aromas and flavors are released during the grinding process. You can also decide your own level of coarseness. However, this requires your own grinding equipment.
On the other hand, pre-ground coffee is ready without any of the extra work. While you may forego optimal flavor, the convenience and accessibility of pre-ground coffee is unmatched when you’re on the go.