English is one of the most spoken languages in the world. The first one is Mandarin. Some say English is the second one and others say it's Hindi. Nevertheless, Mandarin and Hindi are concentrated in their respective countries, and English is more extended.
Apart from this, English is one of the simpliest language I've ever studied. For instance, you can see that German has multiple verbal conjugation, while English has just one (two with the third person of singular).