According to the source, what are the main reasons people, even learned ones, experience dissatisfaction and unhappiness?

Chapter 50 identifies the root causes of dissatisfaction as being deeply tied to ignorance and Maya. A primary source of unhappiness is the false identification with the physical self, expressed as 'I am the body,' which leads to possessive attachments like 'mine are wife and home.' People become ensnared by the 'ropes of thirst for sons, cattle, etc.' and, despite considering themselves wise 'Pandits,' find no real happiness. Furthermore, the text points to intellectual pride as a significant cause for dissatisfaction. The internal thought, 'Skilled in scriptures, possessing genius, there is no other equal to me,' is described as a 'great pride' that fosters discontent. These attachments and pride are all manifestations of Maya or Avidya, which must be removed before true knowledge and peace can arise.