Of course, family is a huge factor. There would be way more homeless people if not for the safety network that the family provides. Also, most homeless in Mexico are not even Mexicans but migrants from Central America and the Caribbean. Though it also begs the question, that since they've been living in Mexico for many years, albeit undocumented, should they not be considered Mexicans? (A whole nother question.) For all those Mexicans who had to leave their homes and families because their lives were in danger (something that's a lot more prevalent in Michoacán than on the Yucatan), they are technically not homeless, but since they can't go home, they are still "en la situación de calle".