[yogsototh]

Self segregate means less communication between people.

Thus communication problem directly impact the frustration of each party about others. Then more violence will occurs.

To be more precise. Yes, everybody want to live with people which share the same values. But this local optimization have a bad effect on the society viewed in its totality.

Taking my own example, I believe that not being segregated in school had made me lose some hours of good Math. But I believe this experience made me more tolerant. And it is also certainly true for the others.

There is no perfect society model, but my inclination is to believe that more communication is never a waste and that any lack of communication is potentially dangerous.