English is a very versatile language and it accepts neologisms faster than any other language which I think goes a long way to establishing it as the dominant language but it's a jack of all trades these days and it would be a great shame if all the subtle nuances of minority languages became extinct because of its dominance.The main reason people choose English as a second language is financial,make it possible for someone to earn a good living and increase their possibilities from the adoption of a foreign language and they'd use Sanskrit if the pay was better than using English.