My wife is a welfare case worker and freely shares her experience with this sort of thing at the end of her day. It is her observation that mental illness tend

My wife is a welfare case worker and freely shares her experience with this sort of thing at the end of her day. It is her observation that mental illness tends to precede everything. It tends to be what leads to addiction, though self-medication. It tends to lead to homelessness through a lack of cooperation with the housing providers, with the welfare providers who would pay for housing, or with the ability to live in a closed space. Even if your rent is paid by the state the landlord will kick you out for destroying property. When the leprechaun tells you to burn things, don't light a fire on your bed. There are the generationally poor, the people whose luck took a turn for the worse, and refugees from violence but those populations don't usually end up living rough unless they also develop mental illness.