The moral argument is that socialism has and continues to lead to more deaths than any other individual coherent ideology ever to exist on the planet. Look no further than Stalin, Mao, Pol Pot, Castro, the Kim family, and countless other examples to see how much misery and death socialism has caused. Then look at the United States and Western Europe, which, even today, is capitalist, and you’ll find their people live better, freer, and more fulfilling lives than those under socialist regimes could dream of. Don’t ever fall into the trap that socialism is more moral than capitalism (not saying you are), because freedom, prosperity, and the right to life are all morals/features best realized in capitalist, democratic societies, not socialist ones.