Was there a greater \"sense of community\" between neighbors in the past? If so, what has changed?

If my memory serves me right about my childhood, neighbors in the apartment where I lived got along with each other. In the past, we knew neighbors and tried to care for each other. At least, we had a sense of community. However, I don’t know when it started to reduce our interest in each other, we seem to make excuses for neglecting our neighbors by saying that we are too busy to take care of each other. In terms of business, we are not as busy as we used to be in my childhood. Probably, the phenomenon of indifference can be brought about by education which has urged students to get ahead and survive the competition. In such an extreme competition, there can’t be any coworkers or friends, but competitors. Students have lost a good opportunity to learn how to collaborate, and live together even at school, they just learned to how to survive others. Before it’s too late, Korean education should be improved so that students can learn how to cooperate with others in a competitive world.