@patricus @hongminhee @clv1 It also doesn't solve any of the problems of "just learn English": can you afford the lessons? Do you have the cognitive ability to learn two languages? Do you have the time for the lessons? Are teachers and materials available? Are they accessible? Do you have a place to practice outside of the classroom? Also, "let's erase everyone's culture" doesn't sound, to me, like any better of an answer than "let's make one culture king".
I speak as someone who studied French for eight years straight, an hour a day, and never managed to pass a single course. There are people who just literally can't, when it comes to language learning. I'm one of them. Though to be fair, it's almost certainly a combination of the environment, the instruction, and other factors, rather than some flaw innate to me. But either way, I've never found a method that works.
I actually toyed with learning Korean, thinking that maybe it was the gendered nature of French, as well as the spelling, that was the problem. Plus I thought a more regular alphabet might help me. But after eight years of bashing my head against the French wall, I just...couldn't. Picking up a new language course felt like going back to hell, and I couldn't make myself stick with it for more than a week.