Some of the data seem to possibly indicate that poverty could in fact be the primary ingredient though. Also, rich families with kids that have mental issues or drug addictions are much less likely to end up in the streets, so it's definitely part of the formula.
> Homelessness Rises Faster Where Rent Exceeds a Third of Income
> According to responses from a 2019 survey of homeless people identified through the PIT count, a quarter said losing a job was the primary reason they became homeless
> When unhoused adults 61 and older were surveyed during the 2019 PIT count and asked why they had become homeless, 22 percent said it resulted from a job loss and 20 percent cited an eviction.
“The fastest-growing segment (of the homeless) is 51 and older who are homeless for the first time,”
> Homelessness Rises Faster Where Rent Exceeds a Third of Income
-- https://www.zillow.com/research/homelessness-rent-affordabil...
> According to responses from a 2019 survey of homeless people identified through the PIT count, a quarter said losing a job was the primary reason they became homeless
-- https://www.sfchronicle.com/projects/2022/fixing-san-francis...
> When unhoused adults 61 and older were surveyed during the 2019 PIT count and asked why they had become homeless, 22 percent said it resulted from a job loss and 20 percent cited an eviction.
“The fastest-growing segment (of the homeless) is 51 and older who are homeless for the first time,”
-- https://sfseniorbeat.com/2021/06/22/people-over-age-51-remai...