Earlier quoted context omitted.
> I guess if you don’t have a massive population of antisocial people who destroy the public facility, you can provide them. It’s a shame we in the west surrendered that. What a weird way of stating the problem. There is too large a population of homeless, mentally ill, and drug addicts wandering the streets. We didn't surrender anything, at least not during the last half century in the United States. We did as littl…
Whatever other issues they may have, they are overwhelmingly mentally ill, largely schizophrenic, and the surrender in the US happened just outside your fifty-year window when the Supreme Court decided that it should be much harder to institutionalize someone against their will. The timing was similar in the UK, from what I have read. Don’t know about the EU. The problem with severe schizophrenics is that they don’t…
Most homeless shelters are run by religious charities. The majority of them treat homelessness as a sin, either by intentional policy or accidents of attitude. These "charities" often require a lot of work to keep being allowed to use their housing at their shelter from regular job hunting to regularly attending worship sessions to "zero tolerance" policies on everything from curse words to keeping private possessions to having pets to sometimes taking/keeping necessary medication. It's hard to keep your mental health in good shape when the groups that are housing you in the worst weather are berating you for being terrible sinners and treating you like prisoners.
Outside of shelters the most common interactions between homeless people and the cities around them are interactions with cops, who very rarely have mental health training or social work experience, and treat homeless people like criminals because their job is sometimes to treat everybody as would be criminals.
You ever really talk to a homeless person? The ones that really survive become very organized. They have a list of shelters memorized, which months they prefer to be at each one, what things they need to fake about themselves they need to do to survive in that shelter for a few weeks, how much "rent" they need to raise before they get there (some shelters often cost pennies per day just to show that the homeless person is "working" somehow; some homeless panhandle just to afford shelters), and exactly how long they can stay before they inevitably get kicked out (most shelters are "short term", intentionally). Just listening to all the rules and regulations and requirements makes me think I would go schizophrenic dealing with that world. It sounds like being stuck in a middle school that never ends, if that middle school's "classrooms" were all in entirely different parts of a city and all had deeply different rules. I can easily see why homelessness often causes mental illness in the US.
Institutions are close to the right answer, but for an entirely different reason than you assert. We do need better secular institutions (in the endowed place of learning sense, not the mental hospital sense) with mental health as one goal among several such as long-term support in charge of dealing with the homeless. The numbers keep showing that the greatest fix we've found for homelessness is making sure that everyone has a home where they feel safe and private and don't have to do anything to "earn" much less keep that home.