Facebook started as a college thing....I missed joining by one year because I'd graduated from school the previous year, so I didn't get into it at the beginning. A friend convinced me to join years later so we could keep in touch after our summer internship ended. Oh, but back to my point....once they opened up Facebook to everyone.....well, everyone was joining! What teenager wants to be on social media where mom or dad is going to likely want to A) be a friend or B) have access to the account in some form? NONE! Yeah, I think many younger people have moved on to other sorts of social media platforms and apps. I know if I was a teenager, I'd be avoiding Facebook like the plague.....but then again, 20 years ago when I was a teenager, we had a lot more freedom in general and it was nice being able to do things without your parents knowing, go places without your parents knowing. Kids nowadays don't have that luxury. (Its kinda sad...)