[simpixelated]

The capitalist machines do indeed grind up most attempts at simply helping humanity; I don't think that's unique to tech. So I doubt you'll find solace by simply quitting tech entirely. Also, be aware that your contributions are relatively minor in the grand scheme of things, would have happened with or without you, and will not be solved if you quit the game. The problems are systemic, global, and ultimately controlled by corporations. You should not feel guilty for being forced into playing by the rules of capitalism.

I would suggest two options:

A) Try to make as much money as you can and use that money to help humanity. We are all extremely lucky to be in tech at this time, when compensation is massively higher than most other jobs. You could leverage your ability to make money and then donate that money to charities you believe in.

B) Find companies who have missions you actually agree with. While these are rare and don't always pay as well, they do exist. There are non-profits (and for profits) trying to solve homelessness, world hunger, inequality, discrimination, climate change, etc. Every type of company needs software developers. You just might have to take a paycut.

Good luck!