we don’t have natural selection nowadays

In the past, we had a “natural selection” or ( we called it: ) “the survival of the fittest” in the world. It means that a natural process resulting in the evolution of organisms best adapted to the environment. However, nowadays, we don’t have natural selection, especially in human race. Almost all the people can survive in the planet and live a long period of time, because our parents are taking care of us so much and we have better medication nowadays. In the past, it was so hard to see that a man could live to 80 years old. Natural selection is almost gone in human race. Every man could survive in the plant no matter he is good or evil. That’s why there are much more evil, depravity, and villainy nowadays than in the past. The world is getting evil because we don’t have natural selection anymore.