The human race today is taking a tragic path towards its own self-destruction, or at the very least will cause the pain, suffering, and death of billions of people over the coming decades, as we fight over diminishing natural resources. Humans are hard-wired for self-interest so we can't expect them en mass to make selfless choices for the common good of all people now and in the future.
We think of ourselves as so incredibly successful as a species, but the irony is that our seemingly marvelous accomplishments will likely be the cause of our very downfall if we do not change what we are doing and do so quickly. Our species has been around for about 200,000 years and for most of that time we lived within the limits of nature, and our population was at a level constrained by the available food, water, and other resources needed for life. Gradually over time our large brains gave us the ability to use technology to overcome the natural limits of our environment. Think of an early hunter/gatherer who might spend ours in a pool of water on a river, using his hands to try to catch a few fish for himself and his family. A few thousands years later one bright spark used a rock to sharpen the end of a branch to make a rudimentary spear giving him more control over his catch. Later still, someone figured out that weaving together the fibers of certain plants in to a mesh meant that this "net" made it even easier to catch multiple fish at the same time. And once man had figured out how to go beyond the banks of the river with boat and net in hand, large scale fishing had come of age. Now fast forward to today where fleets of ships side by side trawl the ocean with their massive nets trailing behind them, catching millions of fish at the same time, and often entire shoals are extracted from the water, completely disrupting the food chain in that location.
One can marvel at such a story of human innovation, but the consequences of such advances are that a) the human population continues to increase as long as the food supply continues to keep up with it, and b) the available food supply, fish in our example, continues to decrease, and left unchecked, the only possible outcome is that the fish population is consumed entirely, at which point the human population will start to dramatically reduce, with food scarcity, starvation, and ultimately the death of billions of people.
The problem we face today is that humans are genetically wired for self-preservation, greed, and selfishness, because our genetic makeup is essentially the same as it was 200,000 years ago where the need to survive and provide for our offspring was the most important priority in our lives. So getting people to make personal sacrifices unilaterally is never going to happen on a large scale, but having a system where all people have a better quality of life, need for nothing to survive, live comfortably, live modestly, and everyone in society has the same benefits as each other, is something that people can accept and will want because they are essentially getting more for less.
Nutopia is a system designed to save people from themselves. It takes the choice away from all people so that they can't do anything which is detrimental to the community as a whole, and they know that all people are being fairly treated in the same way. There is no big government or a group of people that is telling you what to do, the entire Nutopia community has to adhere to the established rules, and they have the confidence to know that all people are playing by the same rules, because the Guardian System ensures it.