My dude. Human nature is more complicated than that. Fixing money doesn't automatically fix the world.
Discussion
There will be always problems, until the end of times that’s for sure. But fixing the money is a good start, is a fundamental thing to fix that takes precedence on other stuff such as climate, migration, etc.
Agreed, getting money right is important, because it is key to a lot of our incentive structures. However, human nature remains the same, good money or bad.
I think the best shot we have at a solution is community. Community helps you establish a home. Community cares for you when you get old. Community enforces social mores that nudge us towards virtue.
As we strive to build better communities, using good money will certainly be a significant piece of that, but I think mutual charity and concern for the common good are deeper.