Who want to see peasant moving from one region to another region en masses every single day? Nations and immigration department work to stop idiot peasant from moving whenever disaster strike the earth, all of you peasant need to sacrifice yourself when tornado strike, when corona strike, migrating to the safety is highly illegal, soon hiding in your basement will be illegal too, they will lurk you out from basement to take risk, the cops will have all the arrest warrant on all basement dwellers, they can broke into your basement for all reason and presume guilty until proven innocent on each of you.
more langauges, more nationalism, more nazism, more racism etc.
better have less langauges, so langauges cannot be used as a basis for identity and hatred.