The reality is that living a life of meaning, where you actually make the lives of other people better, is an act of service that also has personal rewards. But, the personal rewards are rarely worth the blood, sweat, and tears that go into making the world better. Capitalism is a way of harnessing the will of people that want to live a life of meaning to also reward the people that do that well. The personal rewards are just the short-term stimulus to the longer term life of meaning.
If you don't believe in meaning in your life, then the only thing left is personal daily comfort or complete hedonism. Bleak. Actually, hell.
Socialism is a way to organize society so that people are most likely to live a life of personal daily comfort with the least amount of personal cost to daily hedonism. Fits in very nicely with nihilism.
It is what Nietzsche was afraid of, the brilliant *******. If you kill God, what is to stop you from contributing to the progress of society?
It takes a special kind of brainwashed useful idiot to politically defend government fraud, waste, and abuse.