Are you an English speaker? Get to the back of the queue...

do you see the bit in your wiki quote where is specifically mentions Gaelic , with the number 8 next to it benny.? I explained earlier to you , about germanic and Celtic Scots. 

 you seem confused , and annoyed. Take a deep breath , and read what is being written in European English , rather than what you think is being written.

There is no need to, today. There may well be a need to in the future as Spanish could become a global lingua franca if Chinese doesn't get there first. The point is not to rest on your laurels and assume that the dominance of English will be permanent. It won't. It's only a question of time.

I see hypocrisy from one or two of the less thoughtful usual suspects, criticising foreigners for failing to learn English whilst defending the right of the English not to learn their languages because all the foreigners supposedly speak English already. You don't have to be a genius at logic to see the holes in that one, lol

And Thomas is right about the English or Anglo-Saxons who came from Europe and displaced the original British inhabitants from most of present day England. Though the evidence suggests they did not drive most of them out let alone wipe them out. They just supplanted the ruling elite and became the ruling elites themselves, with most of the British occupying positions lower down the scale, many of them as serfs or slaves. Further invasions occurred by Scandinavian peoples and then the Normans. The Normans ultimately supplanted the Anglo-Saxons as the new ruling class. From amongst this ethnic and linguistic hodgepodge the English and the English language came into existence. But the Celtic language speakers of Wales and for a long time Cornwall were the original Britons, their languages the original British languages.

All those proud to call themselves English are in fact the descendants of immigrants.

Who knew eh?^
I would criticise any foreigner living in a foreign country  for not speaking English and afaik no one has .
I would criticise any  Brit working or claiming foreign benefits in a foreign country and expecting the natives to speak English .
Just as I would criticise a non English speaking foreigner working and or claiming benefits in the UK and making no effort to learn English .
I can’t see this being controversial outside of the mindset of very excitable lefties tbh.

I have already conceded that there is no compelling reason now, though one will doubtless arise in time, though probably not in our lifetimes. However, anyone, no matter what his occupation, can always benefit from learning a new language if for no other reason than that it keeps the aging brain active and can lead to interesting insights and experiences. So, although it is not now a necessity, I think it's wise to acquire this very useful skill.

Different languages appeal to different people in different circumstances. Maybe your Nottingham panel beater meets a girl and wants to communicate better with her and her family. Foreign language is beneficial in social circumstances, business transactions and in personal ways too. It's one of the ways that doctors suggest keeping your memory and brain alive as they age. I have a lot of Greek friends, all of whom speak English, but that does not diminish my interest in Greek language, history and culture. If it's not your thing, it's not your thing.

You never know when a foreign language might come in handy. For instance, Afrikaans is a simple, easy to learn minority language spoken in South Africa and Namibia, but since it is derived from old Dutch, it is intelligible to Dutch speakers too. 
I would say that foreign language skills are never wasted, but the lack of foreign language can be a drawback in some circumstances.