Reading thru the posts, it is obvious that English is THE king of languages. And it will be, for the foreseeable future.
One of the reasons for that, may be that the English grammar is relatively straightforward.
Before I started studying German, I was under the impression that German was only an oddly-pronounced English. How wrong I was!! German, has several challenges which English does not have.
Starting with the noun and article genders. Myself being a native Spanish speaker, could correlate to that, but there are other aspects like cases and declinations which I had to struggle with.
Deutsche Sprache, Schwere Sprache. But as I previously stated, very worthwhile to learn.