We watched short video about a homeless man, Mr.Saito. He lives in the park because he lost his money. He resells comics which are laid on a street to earn money. He enjoys reading fashion magazines and dressing him up. He seems to be very happy when he is talking about fashion.
Since different people have different values, I can't say all homeless people can't spend happy life. However, I still think their life is full of hardships after all.