We are all unique, and so is our story. No two person has similar experience and views about the world. A lot depends on how much we have gone through life, traveled, or read.
Humans come in all shapes: happy, angry, or mad. It is not that they are of nature by themselves, but conditioning has its role.
A traumatized kid won’t be attached to anyone while growing up. A bullied kid is not going to make friends.
We are all different with a unique stories. We are lost in ourselves, we have no time to look beyond our pain, misery, or happiness.