Another blogger said it well, so I’ll just share a link for their post, below, with the first few paragraphs copied here:
Why do I hate the book of faces? Mainly, because it makes me like humans less.
If it were not for Facebook, I would not have known how many people I know in real life are racists, anti-government extremists, or science deniers.
If it were not for Facebook, I wouldn’t have known that the majority of adults don’t know the difference between to and too, here and hear, and there and their.
Before Facebook, I thought people were more creative than they are. But I can scroll through two days-worth of posts without finding an original sentence, or even an original photo.
Freedom From Facebook 