Like you, I have lived in areas experiencing a lot of homelessness. I've stepped over sleeping people and drug needles because there was no other way to get to work or where I needed to go. On the other hand, I think that combining this with the statistical facts gives us a picture of the true size of the problem. The mentally ill and addicts are the visible part of an iceberg of Americans slowly being priced out of affordable housing and access to healthcare.
[1] https://news.uchicago.edu/story/employment-alone-isnt-enough...
The folks without those two problems just aren’t the ones in your face every day.
People without a stable living condition experience severe stress and mental illness as a result. People without necessities to live turn to drugs to alleviate the pain and suffering they experience.
This study is one example of how giving money to people to alleviate their conditions can improve their lives and enable them to further engage in self improvement.
You are arguing you would rather treat them worse. Cruelty for the sake of it... because anything else would be 'undeserving burdens' on the 'honest working class folk'. If helping one group hurts another (in your mind), of course that's how you would think. Powers that be conditioned you to think (falsely) it's a zero sum game.
People that have mental health issues need help they are not getting on the streets, there just isn't enough to go around.
Addiction is a weird one for me. people call it a disease, your brain undergoes physical changes. disease is a loosy-goosy word I've come to learn (psychological disorders count as diseases apparently?). Addiction doesn't have to start with 'a choice (on the user's part)', but commonly does - which is why I comprehend that some people blame the user for their addiction.
But the core reason people turn to stuff on the streets is: the streets suck. Get people off the streets... suddenly their outlook improves. Funny that!
And yes, the reduced crime/asset rate probably is worth $X coming from taxes spend on this. That's an easy calculation - human live /comfort should be priced fairly high.