Why is American society and government so merciless?

In that richest greedy corporate-like country, there are too many homeless people. Don't come with "but they are mentally ill, lazy, drug addicts etc." excuses.

Even in too many poor 3rd world countries, it is not like that. Full of Town homeless and poor people in America shows that there is definitely something wrong with that country.

Why is American society and government so merciless?
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