It's because everyone uses it, so it's highly suspicious if you don't use it. Also if you don't use it, it leaves open the door for others to define your digit

It's because everyone uses it, so it's highly suspicious if you don't use it. Also if you don't use it, it leaves open the door for others to define your digital identity. Someone could open a profile with my first name and last name and share pictures that are meant to debase, defame or something else. At least if I share something, I can push something that I want and define myself what is my digital identity. Plus the other which is being able to be contacted by remote family or other high school contacts etc.