Why do liberals ignore the fact that liberalism has always failed and capitalism has always succeeded?

[Annie]

Liberals do not ignore the fact that capitalism's policies and greed render nations with a 2% wealthy class and a 'damn the rest' of the millions unable to afford health care for their elderly or pre-natal care for babies or even healthy food for themselves. Capitalism at its extreme has caused great damage to many, Three mile Island, chemical and oil spills and clear cutting of forests have destroyed the environment with little retribution to the greedy corporations involved. In my world you make a mess, you clean it up and take responsibility for it.

When profit is the bottom line the corporation will dump toxic waste in another countries rivers which slowly kill off its population or endanger people with a chemical leak in places such as India or Mexico.
They will also hire anyone who will work for less and treat them like slaves without rights as long as their profit margin rises. The rich get richer and to heck with the rest of them. Capitalism succeeds for a very short time in countries who leech off the poverty of others, and anyone with any kind of ethics would understand that.

Free market economies work in nations for a short time, they also harm and starve people to death in the short term, they also destroy individuality and culture in less advantaged nations.
Socialism exists and works in many countries in the world. It creates an educated, healthy population with a lower infant mortality rate, with a good quality of life as well.

No one in my country dumps their elderly or disabled in parking lots because they cannot pay for medical care or any sort of geriatric or child health care. They do not raise children who starve or go without health care because corporate culture cares little for the human beings it uses, instead of ethical behavior which educates and creates a healthy well balanced population.