[Relambrien]

The main purpose of drums are to support the other instruments to make the song sound "complete," with a beat and other background sounds. Drums by themselves don't really make a type of music most people would like to listen to, but things like guitars by themselves often do. This is why some people have difficulty accepting drummers as musicians.

Think of drums as the support class from your favorite video game; not that popular by themselves, but they complete a team and make it unstoppable.