why is using your own language pointless?
I can't speak welsh, in part this is due to my inability to learn any language and partly because my father, while being Welsh, only spoke English.
The reason Dad didn't speak Welsh was that his mother and father had both been beaten in school for having been caught speaking Welsh.
The school had a board on a rope that was hung around the neck. The first child caught using welsh would have it hung around their neck. The Child was encouraged to snitch on other childern who spoke in Welsh and the board would be passed on, one to another. Whoever was wearing it at the eand of the day was beaten.