you literally wallowed in your own shit 24/7 until like the marshall plan. you were the only civilization on earth stubborn enough to build cities of 20,000+ people without sewer systems and keep repopulating them from the countryside. dont be ashamed, it conquered the americas
even when you finally gave in and built closed sewers a thousand years after everyone else you just dumped it straight into the river that runs through the city. the only reason your cities finally stopped smelling like shit was because you learned how to make smog