This is healthy in that they are questioning critically, but they need guidance to avoid depression. They need freedom to talk, to talk about what they want to talk about without imposition from adults. They are a bit afraid of not finding answers, afraid people will disagree with them, afraid of never finding the truth. Each must find out what they are good for, by finding out what they are good at. The knowledge of their own capacity fills them with noble confidence, almost religious dignity.
Adolescents are dreamers.
We need to help them keep their interests and imaginations active 8. They are hungry for deep thinking. They need to struggle with past philosophers, art, history. They need to tinker with real world problems. They need a world view that doesn't unnerve them, so they can respond with compassion to where people are.