It's like this.
Nobody is really interested in whatever the others are saying.
Everybody wants to have their own say.
Their own opinion. Their own sad/incredulous/"I'm special"/exciting-but-nobody-really-cares story.
Everybody is bored of the other.
Everybody has their own problem.
Sometimes, some of us think aloud.
Somebody is secretly pissed at the other.
We are all living in a box and we have to stay here.