People like to contribute to society because it feels good. People will respond positively to you if you contribute, and you will feel good about yourself. and you will feel like you're part of something bigger, that you matter not just to yourself but to others too. Look at how much voluntary work is being done in society in all sorts of fields, this is being done for these reasons, not for money. You could argue, that this is mostly in certain fields, and most work would never be done for free. For instance a lot of volunteers are care-givers, and it's easy to see why this is very rewarding. But would people go into the mines to mine coal just to benefit society. Well no, in our society as it is certainly not.

But could it be that we're conditioned to think about our society in this way? In our society people get paid to do such things, it would feel very wrong to us, if people usually get paid for dirty work, that suddenly this would need to happen voluntarily. That would obviously be really unfair. But we could try to imagine what a world would be like without money. If you live in a community that functions like a sort of small anarchist communist society, and you've never heard of money or being paid for stuff, then it's not hard to imagine someone caring about the well being of his community and wanting to contribute for previously mentioned reasons: feeling good about contributing, having a certain status because of contributing. It's easy to see how people currently think, but it could very well be that people currently think a certain way because things currently are a certain way. And that if the world would be different, people would also think and behave different.

Surely in any case there will be a limit to the 'working extra hard', and it might be different from where the limit is for people in our current system. But that doesn't have to be a negative. Competing to gain as much money as you can often goes far beyond what seems healthy. Money is such an integral part of how our society functions that for many it's become a sort of obsession. When thinking of how you could live a successful life some people can only think: if I earn a lot of money, then I'll be successful. And obviously this is bollocks. You're free to define life success by whatever measures you deem important, but comparative study will show that the ones who earn most aren't always the ones that feel most happy and fulfilled. Focusing solely on money often just stems from an insecurity, if it's just money than I don't have to really think. It can feel comfortable to not have to think because this objective of earning as much as I can is predefined and I can try to optimize my performance based on that. I think a lot of people can see how that's a very lacking view on how to live, and it certainly won't be the most rewarding strategy for life if you want to feel happy and fulfilled.