Capitalism is the ideology that defends capital as the main desirable quality in society.
Greed is a consequence of the desire for ownership, which is part of human nature.
Capitalism is the exaltation of that greed… and no, we should not have any system that blindly defends a single aspect of life.
Life is full of nuance, no single aspect should rule it all; sometimes ownership is good (like my pants), sometimes sharing is good (like riding on a bus), sometimes defending a life is good (like preventing a murder), sometimes ending a life is good (like euthanasia)… and so on.
sometimes ownership is good (like my pants)
Anticapitalist critique of private ownership isn’t about private ownership of pants it’s about private/centralized ownership of the means of production. This is a critical distinction, as many models still want a free market which doesn’t work without private property.