Social media is so popular because there are multiple reasons people around the world use social media. Primary reasons are:
It gives the possibility to stay connected with friends and family.
It gives the opportunity to find and connect with new people.
Social networking sites are free, and they implement various algorithms to find the type of content users might like and display similar type of content on their feed section.
People use social media sites like Twitter to stay updated & connect with the brands they like.
People use sites like LinkedIn for professional networking.
Looking at beautiful visuals from people all over the place, share their photos with the help of sites like Instagram
To learn new things, to kill time with the help of video entertainment.