We should each ask ourselves such questions and review our view on them from time to time during our life because they're important, but mostly by doing our own research and self study. But asking point-blank strangers such a vague question is putting an unfair burden on them.

There's maybe a few hundred people worldwide who could casually drop a proper answer to your question while casually browsing hn.

I believe it'd be more fair to start answering your own question to show how far you are in your intellectual journey on that topic.

My own answer is this. We have created a system of exploitation where we extract value from people's labor and transfer it to an oligarchicy that is slowly increasing in power. Governments are captured by that ruling class and are unwilling to do anything that threatens them. In addition, they are slowly reducing the rights and social mobility of the middle and lower class in order to expand the power and capital of the oligarchy.

Any money that is possessed by the working classes is then taxed in the form of increased living expenses or directly by the government until they can barely afford the necessities that allow them to continue working. Once they are no longer able to do so, they are discarded and allowed to die of preventable illness, starvation, drug use or exposure.