It depends on what personality people have but gives a general example. People usually study and try to achieve their dreams. And they have hope for a future they would love. If people were all dreaming the same dream, the world would not have developed. Many things are needed for the world to develop. However, if everyone tries to go one way, it will take a toll on everything. The competition will be tremendous, and conflicts may arise between people. Talking on the premise of love, this will also be a mess. If everyone likes the same style, maybe everyone looks alike. If everyone has the same personality, all the things they pursue and their appearance will be the same. People will use the same bags, accessories, clothes, shoes, etc. And while electronic devices such as mobile phones and televisions come out with designs and new functions in various fields, only similar products that people pursue will be released. In other words, although there may be some development, diversity will disappear. 

On the other hand, it can be more convenient. People can have time to spare because they all pursue the same thing, and it can be better in terms of money. They won’t have to think about what to eat or what to wear every morning. And in general, people pursue cheap and good products. If everyone already knows what people like and hate, it may make life easier.