Money as a medium of exchange does make a lot of sense imo (I dont know if that contradicts any of my previously made statements)
I do not remember exactly what I've said in the past, so I'll sum up my feelings on "economics" and the direction our society needs to go in as related to it.
1.) Efficiency is a dirty word. Historically speaking, breakthroughs in efficiency, whether mechanically, organizationally, or otherwise tends to be initially viewed as a sort of labour-saving device--which is obviously beneficial to a number of interested parties. However, the narrative usually goes something like "this will enable us to continue production at our current output and increase the quality of life of our workers" or something similar depending on who's telling it, whether this is straight up unethical marketing or an actual grounded mentality is unclear to me, but what almost always ends up happening is that instead of decreasing pressure on workers, it increases the amount of work they have to do--usually due to some combination of new space to compete is lowering prices, feeling that man-hours can be reduced due to breakthroughs, or simply demand as a market expands rapidly. Frankly, I think the industrialization of massive portions of our planet and population is overwhelmingly negative--that is not to say that life today is particularly bad, but that the stress heaped on the individual is enormously greater than any time before the early modern period.
Not to be obscurantist, but if you're going to go to great lengths to educate a population, put them in debt, then force the majority of those people to work their way out of it through some of the psychologically worst jobs possible how is that not just torture? Especially when you it's completely obvious that from a social point of view, everyone could be working 50% less and still have all the things they need to enjoy a good life? And that the prolongation of your torture is simply due to the fact that a few incredibly wealthy groups of individuals want to measure their dicks by showing eachother who has the most money?
2.) Economic theory, public knowledge thereof, and simply our understanding of why things are the way they are are all fucked up. To be frank, it really shouldn't matter how the economy is doing for people to enjoy a decent life, not even a GOOD life, just a life free of hunger, physical danger, and exposure to the elements. American society, though not necessarily designed this way, can be pretty easily interpretted as brutal wage slavery. It is essentially a crime that anyone at an given time cannot simply say, I have decided to quit, built a hut, and live off the land without major repercussions. One may have expected that a global economy and connected society would foster the rise in living conditions around the world, however it has simply enabled the same old power hungry people to oppress the same out power starved people in novel and subtle ways. What I'm try to get at is "economics" really doesn't do much to improve the world for the average person, as an academic, philosophical, and scientific development it is the social equivalent of histories written by old, rich Roman senators--studied as objectly profound, reasonably accurate in its predictions, but not necessarily truthful or useful at all (especially in all the limited ways in which it is presented or exposed to the public at large). As a society we should be stopping people from accumulating power, whether it comes in the form of physical wealth or otherwise, not attempting to ensure the "health" of private corporations or sources of revenue for the state.
3.) Even without the accompanying accumulation of power, the accumulation of wealth (on an individual level) beyond what you could reasonably expect to need in a lifetime is deeply unethical for a number of reasons. Not that taking the wealth from the very wealthy would solve ANY problems, it is simply the deeply held belief in some people that one could possibly DESERVE many hundreds of times greater wealth, standard of living, and leisure than another. And usually the people who end up on the favorable side of that disparity, seem to think that somehow they have actually worked many of hundreds of times harder to get there and that anyone could do as they have done. In short, as I most definitely have said before, being extremely rich is literally a violation of the social contract. We agree to band together as humans because teamwork usually benefits all of us, and we also recognize that no one is so weak that they are inferior to another AND that no one is so strong that they are superior to another. But I mean? How is climbing your way to an easy life on the backs of others ethical or right??? It is one thing to assume a hierarchy of granted and given powers to ensure a certain degree of compliance, safety, and expediency--but it another to take all the gains, fuck off, and tell your fellow man that he simply doesn't deserve what you have and use your newfound resources to stop people from evening the odds.