"All the wealth that the world has are the natural resources (that we exploit rather than use responsibly) i.e food, water, fuel, everything"
No, that is not wealth. Those are resources. Wealth is created when those resources are extracted, controlled, managed and distributed. None of this is possible without investment from private or public sources.
I would sustain that you are wrong, those resources are the wealth. If we don't have food, if we don't have water, if we don't have fuel/energy, we're not going to last long on this planet. And those are the things that everyone is fighting for i.e. wealth (although yes, they are also resources at the same time).
We don't need "investment from privte or public sources". We could still extract, control, manage, distribute and use all of those thing without depending on money. All of those things need PEOPLE to do them, not belief in an 'all-powerful' paper God. The building of railways, food, buildings, airplanes, anything, does not require money and investment to do it. It requires people. Take away most of the people and it doesn't matter how much money you have you won't get much done.
I'm afraid your sprituality doesn't have an awesome track record in not ending up with people killing each other over their definitions of this intangible condition.
I really doubt you know much about my spirituality, not least based on your contradictory logic about what that supposed spirituality is. (Promoting 'sharing and caring' and then also killing others for not agreeing with that?) But such contradictions do more to reveal your personal biases than anything else.
Whether it's murder using the name of God, or murder while denying the existence of God - it doesn't really matter. It's murder for the sake of having more and having control over others. (Although I think you'll find that it's 'atheist' regimes that have killed a lot more people in their empire building than religious ones, no matter the hype.)