How stupid are we? North America was covered in gigantic roaming

 

How stupid are we? North America was covered in gigantic roaming herds of buffalo eating grass and fertilizing the plains. In the winter, they grew more fur and used their snouts to dig for the frozen hay. It was a perfect system. All the people had to do was take the meat when they got hungry. They didn’t have to do anything to maintain the abundance because the buffalo and grass had co-evolved and were in a perfect balance. Now we’ve replaced the buffalo with cattle from other continents that get sick all the time and have to be fed antibiotics, which we end up eating second hand. We keep the cattle fenced in, preventing them from wandering to where the grass is growing and forcing them to tromp over and excrete on the same ground until it turns to smelly mud and dust that can’t support life. We grow grass separately and put fences around it to prevent animals from eating it. We have to plow the soil every year to keep it loose enough for the grass to grow in, since the hooves that used to do that are locked out. Then we spend time and energy harvesting the grass and transporting it to the cattle where we've trapped them. Then we spend more time and energy collecting the fertilizer and carting it back to the fenced-in grass. How stupid are we?