Actually, he did have a choice. He decided to sacrifice an objectively better living to alert the public of what was happening in their names without their consent. He also decided not to go home because he believes it is best for his country. If he goes home, he won't be allowed a fair trial under the Espionage Act, which would set a terrible precedent. He has repeatedly voiced his intent to face trial at home if he's allowed a public interest defense in front of a jury.