One of the problems of guaranteed minimum income is that many people who are perfectly capable of working will refuse to do so because they do not feel the need to.
Ironically that is also the problem of capitalism, as people with enough money will just retire early (in fact that's the whole point of making money).
I think any system based on money will encourage some people to not contribute to society, that's why a society-based system would be so much better.
I remember seeing a threat about the danger of robots stealing our jobs. This is not a new topic either. When industrial revolution started some people predicted all jobs would be eventually outsourced to machines, but back than it was considered a good thing, and in fact it should be.
Some things require human thought and skills machines will never be able to perform, but most jobs can be perfectly handled by machines, fully automated, and much cheaper, faster, efficient and less wasteful than a human ever could. This would mean that no human would ever be required to work 40 hours a week, and leave us free to do what we desire most, while occasionally doing some light jobs that machines can't do. The whole world would benefit from it.
However in the current capitalistic world the only thing that would happen is that whoever replaced their workforce with robots will just safe a lot on wages and make a huge profit, but it will not directly benefit anyone other than the stakeholders of the company. In fact all the employees who got fired will be off way worse.
So even though the productivity and efficiency of the world increased, and by extension "true wealth" increased, relative wealth decreased for all but the very rich investors. That's one of the many things wrong with capitalism. Fiat money (and even gold/bitcoin) are not an accurate representation of true wealth, and people are more concerned about their own short term interest than about the long term interest of the world as a whole.
What a brilliant comment. I completely agree with you. I would much rather see a world without money. How about a world not based on money which breeds individualism but on unity. Imagine if we could combine the minds and skills of the people? How great would the world be?