It used to be, back in the day, we would carry pictures of our kids/pets/boat in our wallets, and when we ran into friends we hadn't seen in a while, we'd break out the pictures to show them glimpses of your life. They'd say, "Wow--they've grown so much!" or "What kind of dog is that, a poodle mix?" or "So, you bought the 30-footer. That must be a pain to pull."
You'd catch up, then go your separate ways, until the next time you meet up and you hopefully have updated pictures of kids/pets/jet skis you bought after selling the boat.
My, how things have changed.
Now, due to advances in technology, not only can you post pictures and videos of your kids/pets/boats/cars/selfies and everything else 24/7, but you can check out millions of other people's posts of their kids/pets/boats/cars/selfies and everything else they post. And even though, to the ones posting, the things they're sharing with the world are the cutest things imaginable, others may find them cute as well, they'll never find them as cute as you do.
It's just the way things are.
We just got a new kitty, and he has a name, SamDean Winchester. We've been taking care of him since Monday and I can personally say, this thing is one of the cutest things on the planet. But to everyone else--those not emotionally attached to the previously-mentioned kitty--it just doesn't mean as much. There's no way it can. All those baby pictures and pet pictures and vacation pictures people post, they definitely mean the world to them, but just not the same to us.
Of course, this won't stop us from posting all this stuff. I like to think of social media as keeping a digital journal, except the days of having your journal be "private property" are all but gone. It's good to post things and be happy/proud of those memories. Just don't get upset when we don't feel the same way as you.
Naturally, the only exception of my theory is SamDean Winchester. There's no way to argue his awesome cuteness.
*Video clip from Napoleon Dynamite used without permission