If we are all the same, we're all friends. We wont be biased based on friends, hobbies, looks, etc. We could still travel the world to see other parts of the world, there's more than just people we"re interested in seeing in other countries in other parts of the world. Like nature. By saying that all we want to see in other places is people is rude. Its saying that they are different, and weird. Its degrading. We visit other countries to see landmarks and nature, not to gape and stare at the other people like theyre a weird animal. And, if we all speak the same language, it will be easier to communicate with everybody.