Why do Humans Need so Much Space?

Some of us are content to surrender our personal space to serve on a submarine, while some of us struggle with claustrophobia. As we become more urban and the global population increases, we have to get used to having less space but some architects say we need more of it because it boosts our sense of wellbeing. Why do we have such a complicated relationship with the space we live in? (Photo: Dense cityscape of office buildings in Hong Kong and China. Credit: Shutterstock)