My philosophy is: certain things are good for everyone if everyone has them. Some of these things: food, education, healthcare, place to sleep (securely), modest personal possessions, and so forth.
Reasons are mostly because of what you said. Homelessness leads to a general decline in society. If more people have healthcare, the general health of everyone goes up. If more people are fed, more people are productive, and production is good for everyone (to draw an incredibly broad generality). And so on.
It's unrealistic to say we'll do all those things 100%, but I do not think they are unrealistic goals for a modern and technologically advanced society.
Price breakdown:
30bil/year to end world hunger. 175bil/year to end world poverty.
20bil/year to end homelessness in the US.
I can't find numbers for everything, but those are some good ones to think about.
If people could separate themselves from their emotions, if they were taught stoicism, Buddhism or how free will and the self is a (likely) an illusion, then maybe they'd be stronger.
I can't elaborate, but I know people worth hundreds of millions of dollars, that are young, beautiful and have everything, but can't handle life, and tried to kill themselves but why?
Because an obese corrupt doctor told them that he knew the mysteries of the brain, and that they need to take a lighter form of methamphetamine every day for the rest of their life to be normal.
As Dr. Carl Hart explained, adderall is basically meth- http://www.vice.com/read/a-neuroscientist-explains-how-he-fo...
That person is in college, and the social acceptance of taking adderall to succeed is scary. If you can handle a low dose, great, I'm all for practicality. But most can't and the idea that amphetamines can cure a lack of focus is pseudoscience.
So excuse my tone, but I don't believe in what you said. The problem is behavioral choices (health, what you read/watch/interact) and learning how to deal with one's own thoughts and impulses, not mythical theories on brain chemisty.
What you are saying is often the cause of the problem, not the solution.