It's not a matter of whether they are productive. The ones behind the white picket fences aren't causing problems for others. And, fundamentally, that's what most people care about: do the person's actions pose a problem for those around. And while the Karens of the world might go into a rage at unsightly, most people care far more about whether something poses a threat.Not everyone will. Some people simply are not suited to living within the confines of polite society, however you define polite and society. They don’t want to or cannot. For some, it simply is a matter of preferring to spend their time in a haze of ( substance). Plenty of people behind nice white picket fences soothe themselves with ( substances) or screens or buying things or ..whatever. We think of them as productive because they live behind those nice clean fences. They do not disturb our sense of order or challenge our way of thinking or at least not too much. Somebody dies, remaining family members come to clean out the house and ten there may be plenty of judgement. Or not.
The reality is that mental health treatment isn't easy. In some cases there might be true solutions, in many there's only drug regimes that restore a semblance of function. And drug treatment isn't easy, either. And in both cases the patient must truly want to get better, compelled treatment is all but useless.But some people struggle with various mental illnesses and do not know how to access treatment or treatment is not effective for them or is financially or geographically out of reach. Or more likely, they grew up watching family members soothe their pains with bottles and pills and they follow that pattern and too often, it swallows them up. That is a failure of society to reach people and to effectively help them deal with whatever their issues are more effectively and more safely.
The problem is those places attract the problematic ones. The ones most able to be helped generally fear the shelters.We don’t necessarily want to deal with people like that, more than we have to. That is one very good reason to ensure that people who don’t have a stable place to sleep and wash up do have such places to go , where get can get a meal and a clean bed and a shower, get some medical care. Feel like there is a place in the world where they belong.
The ones for whom the problems are economic are the easy cases. So long as you can identify them, put a roof over their head and things will probably get better. And note that they're typically not causing problems while living on the street, either. It's unsafe for them but not a big problem for society.And of course there are those who find themselves without a home because of a job loss, a divorce, serious illness or injury, medical bills, a disaster of any kind. Or the landlord’s son or niece needs a place to live or died and the family is selling the building.
I think a decent society does its utmost to ensure that everybody has access to basic amenities of life: clean water and adequate food, appropriate clothing, a decent place to shelter from the weather, and to sleep at night, access to health care, including mental health care. A sense of community. A chance at more if they want it: job training and job coaching and placement, education.
Some people fall on hard times temporarily. Some struggle all their lives. Some struggle more than necessary because they do not have access to ( safety net) that helps them recover from setbacks and hardships.