In the ancient days, when the Mongols were still a country, and the English and the French were fighting the Hundred Years’ war, the monumental Empire of Rome (at least the western half) collapsed. It collapsed for many reasons – from invaders to the immoral culture Romans obtained in its later years.
The first reason it fell apart was that the empire was simply too big to be kept all you the emperor. It’s kind of like there’s a bunch of people in the room and they all get one piece of candy – but you. You get handfuls, and everyone wants more candies so they try to take yours out of the large indent the middle of the room on the floor. When you’re guarding one side, everyone rushes in on the other side. They slowly get the candy until you have none left, and the hole becomes the storage for the guy with the most candy at present. Now imagine the other people in the room to be other countries and cultures and the chocolates to be land, slaves, and money, and the one hoarding the candy at first as Rome. That’s in short what happened to Rome – other cultures weakened it by attacking the borders and taking Rome’s money and the soldiers to be slaves.
While the other cultures attacked from outside, Rome was slowly destroying itself through its wholly debauched and self-centered mindset. The reason for this was the emperors and politicians sometimes declared free food and Gladiatorial Games at the Coliseum or free baths for the day to curry favor, and the people got more and more used to getting free stuff so they just hung around the coliseum waiting for the next meal of free food. Then they got used to that and didn’t cook for themselves so they got lazy and didn’t want to go fight wars when asked, decreasing the amount of soldiers in the army. This led to the surrounding countries attacking more often and killing or enslaving more soldiers, ever lessening the number of soldiers. Then the Vandals attacked and ransacked the city of Rome itself, breaking the last of the confidence in winning from the rest of the Western Roman Empire.
Both of these reasons are why the Western Roman Empire was decimated. Because of those reasons, Rome fell with almost no resistance when the Ostrogoths attacked. The sheer likeness of us to the Romans is surprising and not good, especially in the immorality of culture. If we keep up this pattern and develop a Roman way of thinking, we will be destroyed by Korea or China or any other enemies.