Languages now have many impolite words.Cause the world had changed and also people had to changed too.
People's habit is changing everyday.We have now many languages in this world exam,English, Chinese,French,Thai or etc.
I think the main language that peoples always use it to communite is English.It's easy to learn and easy to understand
in English if you intend to do.But it's not good if you hear some impolite words and let it come to speak.
It will be useful if you know in many languages.Someday you will go to work and meet a colleagues.There's a many peoples
from many countries. Use your skill languages to communicate with them is the best. Hope everyone understand in Language and World nowadays.