What would a world without sustainability look like?

Once upon a time, all species lived on Earth, coexisting and living their lives gracefully. However, as time passed, human greed evolved, and they began manufacturing, selling, and using products that were toxic to the Earth in order to make their lives more convenient and comfortable. Due to humans' careless actions and unhealthy habits led to dire consequences, causing the Earth to become a barren wasteland, polluted with garbage. The rise in carbon emissions caused by human activity accelerated the effects of climate change, causing sea levels to rise, extreme weather conditions, and a decline in biodiversity. Economic and social inequality continued to grow, leading to increased poverty, social unrest, and political instability. Humans then began consuming natural resources at an unsustainable rate, which led to resource depletion and scarcity. Their actions caused health problems and ecological damage. When even this wasn't enough, they continued to destroy natural habitats and ecosystems, leading to the loss of biodiversity and the extinction of many species. As a result, the Earth became uninhabitable and unsustainable. However, humans found a "solution" with technology. They moved to space and created a way to live there. Now, the humans who moved to space still exist, but they are restricted in many ways. They are unable to walk in space or move their bodies freely, and have become overweight. They have no social connections or human interactions, and the quality of their lives is declining. They are still finding ways to make their lifestyle better.
However, without sustainability and the Earth, their existence in space is one of mere survival, not true living.
Sustainability is essential for the survival and well-being of our planet and future generations. A world without sustainability would be a bleak place to live.
It's important to take steps now to ensure that we prioritize sustainability in all aspects of our lives. We need to conserve resources, reduce waste, and work toward reducing our carbon footprint.