The point is there would be a lot more documented evidence if there were as many cougars as some would have us believe, and as noted in Colorado and California, they also eat people. No one has been attacked here and our population density is much higher than any western state. If there were as many cougars as some like to say, there would be a much greater documentation rate, especially with everyone using cell phone cameras.
Only 27 people TOTAL have been killed by mountain lions in the United States in the last FIFTY YEARS. So, if we have a small population in the Midwest, I doubt that they would be "eating people", let alone attacking or killing anyone. You have a lot more to fear from pet dogs (20-30 deaths in the US per YEAR) and lightning strikes (50 fatalities per YEAR in the US). So, 3750 deaths in the last 50 years from dog bites and lightning versus 27 deaths from cougar attacks.