Grown-ups who can't make friends.
Want to know the biggest secret in the world? A secret so big that everyone already knows it, but still no one will talk about it?
Most grown-ups don't know how to make friends.
It's true. I'm one of them. So is my wife. We really struggle with this. Sure...I've got friends. I'm a friendly person. I'll conversate and doing all kinds of friend-things with you.