From Wikipedia

Henry VIII - The Mind of a Tyrant

Episode Two

Henry was an attractive and charismatic man in his prime, educated and accomplished. He was an author and a composer. He ruled with absolute power. His desire to provide England with a male heir—which stemmed partly from personal vanity and partly because he believed a daughter would be unable to consolidate the Tudor Dynasty and the fragile peace that existed following the Wars of the Roses—led to the two things that Henry is remembered for today: his wives, and the English Reformation that made England a mostly Protestant nation. In later life he became morbidly obese and his health suffered; his public image is frequently depicted as one of a lustful, egotistical, harsh and insecure king.