Dude, in this case what make it hard is not nature, is not our technology or even the will of most people.

We have means to feed everyone on this planet. Make clean water available to everyone. To make everyone have a house. And to revert clima change.

What is stopping that to happen? Most people here will answer "capitalism", but explain and prove that is not so simple because, as you said, the world is complex and we live inside the system. Think about how someone on ancient times trying understand a critique about their own society made by an outsider. Not that easy. And to make that even harder, we feed get propaganda from all sides.

I suggest you to make more basic/small questions. Like "why food companies don't donate excess food for people in need instead of trashing it?", the answer will be an excuse about risk of being sued. That's not true, the are laws in US to protect companies donating food in good faith.

Or maybe "Are there options to capitalism? What is socialism? What is communism? Why do they failed? Did they failed? What can we learn with history? Where can I find good sources?"