What made William Shakespeare want to become a writer?

On a Shakespeare tour in Stratford-Upon-Avon, the guide mentioned that Shakespeare became a writer because he needed to make money.  He had worked for his father who was a glove maker, but the family ran into financial trouble. 

"Legend long held that Shakespeare left Stratford because he was being pursued by the law for poaching deer on private property."

"London players would visit Stratford regularly. Some time between 1585 and 1592, it is believed that Shakespeare left Stratford for London and joined a company of actors as a performer and a playwright. It is probable that young Shakespeare could have been recruited by the Leicester's or Queen's men."

He was offered an opportunity to write and to act; he was very skilled at adapting topics that he read about and his plays became very popular with audiences and he quickly established himself as a successful playwright.