What would the world look like today if dinosaurs never went extinct?
It is hard to say exactly what the world would look like if dinosaurs never went extinct. The extinction event is one of the major factors that allowed mammals to thrive and become dominant. As such, it is unlikely that humans could have evolved under those conditions. It is possible that reptiles, such as dinosaurs, would have evolved human-level intelligence and civilizations. Alternatively, the world might never have evolved advanced civilizations at all. Whatever the case, it is clear that the world would look quite different if dinosaurs never went extinct.