Regardless , today we're already at more than 8 billion people globally . With the amount of stress that places on natural resources , can you imagine what will it be like in 2050.You are talking about relative poverty, I am talking about absolute poverty.
https://www.economicshelp.org/blog/glossary/definition-of-absolute-and-relative-poverty/
Let me give you a hint .The Syrian civil war began with a demonstration at the government's response to a drought . Assad's government came down heavily on the demonstrators . The rest is history . I wouldn't be as sanguine as you on the future of world economics .