@kolev @serge I used to really suffer over things like how horrible most food was for the world: for the human laborers, the animals, the soil, and the atmosphere. I stopped buying food altogether at one point, and planned my life around the trash pickup schedules in my town, so I'd eat the garbage before the trucks took it away.
I got out of that by focusing on pikuach nefesh. It's not my responsibility to singlehandedly fight every injustice at the cost of my life, I had to figure out something that would enable me to live. And that way of thinking would have ended me up in an early grave, I'm very sure. I had no regard for myself, and that is not really aligned with the Jewish perspective that we are each immensely valuable, e.g. bc we are made in the image of hashem.
You are not obligated to finish the work of the world!
I hope you find some comfort soon.