What Would Happen If Everyone Thought The Same?

What would happen if everyone  always agreed? The world would probably become more boring and ordinary. Because,  I think when everyone has a different idea, the world is different and interesting thought systems. So what about ‘ but the world will be more peaceful. Of course, it will be but not too much. For example, different thoughts make people disagree at some point and this can sometimes cause a fight. So if we continue what are the advantages. Making collective decisions will be become more easier. But I think  this topic,  has more disadvantages. As I said the world will be become boring and thinking different is not false or a bad thing. Not everyone has to think the same for everything. Sometimes what of the majority thing can be false too. And if everyone agreed with what the majority thinks sometimes it can be affected bad too. So about this topic, I think everyone shouldn’t  agreed always. Sometimes thinking different is good.