Why is oil unsustainable?

Oil is unsustainable primarily because it is a finite resource that takes millions of years to form, making its extraction and consumption outpace natural replenishment. Burning oil releases greenhouse gases, contributing to climate change and environmental degradation. Additionally, oil extraction often leads to habitat destruction, water pollution, and geopolitical conflicts, further exacerbating its unsustainability. Transitioning to renewable energy sources is essential for a more sustainable future.