However here you're using a pathological condition (depression) to make a judgment about a normal one (introversion). That is not necessarily reasonable. Introversion doesn't have to imply asocial; but rather just that the person can't socialize or more generally _absorb external stimulation_, _for an extended enough period_. And the world does need introverted people too who prefer to sit around cooking up ideas in their head as much as it needs extroverted people to put together teams to realize those ideas.