Creating a new group on Facebook allows users to build a community centered around shared interests, hobbies, or goals. Groups serve as a platform for members to communicate, share content, and collaborate in a more focused environment than personal profiles or pages. They can be customized with privacy settings to control membership and visibility, ensuring the right audience is engaged. By providing a space for discussions, event planning, and resource sharing, Facebook groups foster meaningful connections and active participation among members, making them a valuable tool for both personal and professional networking.