Firstly, the communication would be easier if we all spoke the same international language. The schools should teach English from an early age, the same level as the Catalan and Spanish, and even give it more importance.
Secondly, English fosters relationships between people around the world as it is the international language. Wherever you go you will speak English thanks to the massive arrival of tourists in Spain, so you will have to use this language from time to time.
In my view, the English language is becoming more important but I think the Spanish education system should change the way to teach it, focusing on oral expression more than theory.