How does Socialism hurt the poor or lower the quality of life for everyone?
By rewarding failure and thereby creating more of it.
Black families in the United States were the fastest-growing income class, until the 1960s when the Marxists decided to sabotage them with harmful government policies.
"You can have this free apartment - but only if you're a single mother. Your husband has to leave the family if you and your kids want to stay here."
Guess what? Offer it to enough people, and some of them will take you up on it.
The Socialist policies in our government actively worked to destroy families and keep people in cycles of generational poverty, dependent on the government and helpless. Less husbands and fathers, more poverty and more prison sentences.
And why do you not include Democratic capitalism? Surely that has failed too?
Which country would that be? In the United States, about 50% of the population pays taxes. The other half gets free money from the ones who pay taxes. And the ones getting free money are the ones under the most government control with the least hope for a better future.
If Capitalism has failed, it's only because Socialism took over a long time ago. But don't point to Socialism and call it Capitalism.