Introversion is a learned behavior of comfort. Extroversion is a learned behavior of comfort. "Damage" is going outside your comfort zone. Everyone can damage their comfort zone. The brain and body is a chemical soup refined from a combination of your DNA and your environment (what you feed it and are exposed to). The question is, in a society of freedom and free will, if your environment forces you into a behavior you're unhappy with, is that truly damaging?

This is such an arrogant thing to say and completely untrue.

> The question is, in a society of freedom and free will, if your environment forces you into a behavior you're unhappy with, is that truly damaging?

Being forced to conform to a set pattern of social behaviour/enjoyment is thoroughly damaging to your psychological health. It baffles me that anyone would think not.