Yes, if a 70 year old does not want to be with his wife any more and he would rather go to prison so long as her did not commit a crime against her in order to choose prison over her. It is hard to say without more facts about the matter.
No, the bank robber's decision was not justified. Unless his wife threatened his life, there is no reason to choose prison over the comfort of a home. He may regret his decision soon. Once he sees that he must eat when he is ordered, he will understand that his wife was more understanding than his prison guards.
This man, who stated that he robbed a bank in order to go to jail rather than live with his wife, has created a funny but telling discussion around choice. The idea that he had only two options is a construction of his own making. The only situation that would justify such a tale would be if he was the subject of emotional or physical abuse, which have so far not been reported.
A man's decision to choose prison over marriage is not justified. There does not appear to be abuse, but even if there were, he had other options. Instead, he scared a woman and caused the police to respond. He could have chosen to leave rather than staying in an unhappy marriage.