Earlier quoted context omitted.
Look at it as at a bad but addictive habit. Hundreds of millions of smokers do harm their health, and through it their own and their neighbors' wealth. But quitting is indeed hard.
You can’t seriously compare smoking and keeping up with friends and family, which is the reason that drives most of the usage of Facebook.
You must come from a nice family.
Some people don't. Some people are actively in hiding from their families and things like that.
Some schizophrenics go to in-patient treatment, get better, go home to their nutty relatives and get worse again. This is a known thing.