Let me put in one little piece of “food for thought.”
Yesterday I was at a party and met some people from Colombia. The man was telling me how he lived in the same neighborhood as the host of the party, when they were young. The host ended up moving to Spain, the guy I was speaking to moved to NY, and they lost touch for years (this was before FB was invented). Then a few years ago, it was FB that brought them and their families back in touch.
When I was a kid, if someone moved away you had to keep their address, and if you lost their address you were out of touch forever.
With email addresses, you might have someone’s email address, but if they change emails or email providers, you might not know, send them email and it hangs in cyberspace forever.
I always tell people that the good thing FB does is that you might lose someone’s phone number, people’s email address might change, but as long as you’re connected through FB you can be connected forever. You don’t have to read their “every day mundane information” and you don’t have to post anything or read the trite inspirational crap or look at funny photos, but you will have a way of keeping in touch with this person, guaranteed that you are in touch with the right person (not an email address that’s no longer used and you have no way of knowing) till the day you die, if you so desire.
(Also, besides my point but another advantage is that if you have photos you want to show people, like if you had a birth in the family or someone graduates or gets married, instead of e-mailing those photos to a zillion people (and possibly forgetting someone), you just post them on FB and all of your friends can see them. For me, that’s the other thing it’s convenient for).
I’m not saying FB is a perfect thing, because it’s not. But at the very least it is a great way to keep in touch with people to an extent that you want to.