Have you ever thought why do so many languages exist in the world? Because they were developed at different locations independently and there was no communication between those places. Now the world is getting united. Do you still think that Hindi unites India? Well, in number it may outweigh any other language. But India survives on English and hence the most of the world. Even Chinese are learning English now. Why should we carry something just because it was inherited for long? Why not be practical in making English as national language and mandatory subject, medium of instruction in all the schools, when we practically use English everywhere.
Other languages! let them be part of optional languages, literature, movies, plays (of course, some of the languages will then extinct naturally).