Why do mostly educated persons like to speak in English?

Why do mostly educated persons like to speak in English?
Speaking English is something similar to our parents and given names... , it comes with the gift of birth, family and circumstances of each of our lives. That is the same with any other language as well. I was born to parents who were themselves not born to English speaking parents or families, but learnt English as a second language and later worked in environments requiring to communicate essentially in English. So, when it came to my education, my parents realized that English was a significant advantage for early, school and higher education, in the environments that I was living. I would not have been able to attain a postgraduate education if it wasn't for English, in the area of my interest. However, it doesn't mean that English is the only way. The Japanese, the Germans, the Chinese, and several others use their languages very effectively.