If you do require learning another language and you are not well versed in Hindi, you must learn this because Hindi is globally best language to write and speak besides the fastest growing Indian economy becomes many times more accessible in Hindi. Hindi has always been the real gateway to India. Availing the internet share the languages deserve, Hindi is destined to become the largest market worldwide.
India has emerged as second largest base of internet because it is expanding in Hindi faster than in any other language. China is now number one but because of not being a democratic society, new people are not going to get assimilated among the Chinese speaking populations although the prospects of Hindi are very much open across all the countries. The numbers of Hindi speaking people are growing everywhere. They would soon become the most substantial portion of the global economic setup.