• Since ancient times, people know the connection between isolation and mental focus. Cultures with traditions of old religions believe that solitude is important for enlightenment.
  
• A loner's brain goes in a state of active mental rest, due to the stillness of being al...

Social withdrawal is categorized into three types:

• It’s hard to be introspective, self-aware, and fully relaxed unless you have occasional solitude. 
• Introverts tend to have fewer but stronger friendships – which has been linked to

• Emerging research suggests there are upsides to being reclusive, all by ourselves, minding our own business – for both our work lives and our emotional well-being.
• Prolonged solitude or extreme social isolation is proven to be harmful, but a good amount of alone time has its advanta...

There is a difference between useful solitude and extreme isolation. If someone stops caring about people and cuts off all contact, this could point to pathological neglect of social relations, becoming dysfunctional - this is dangerous.