konichiwa, yes, I'm from The Netherlands
I've learned myself to speak, write and read English since I were six years young
I find it surprising that everyone immediately starts arguing about which language we will use as standard language, with as possible options English, Mandarin Chinese, Spanish and Esperanto (serious try? )
I think, however, that we'll better use an adapted version of English, so that at least the worst inconsistencies are gone. From other languages we can use parts to improve this 'standard language', as we'll call it for now.
The result would be a new language which would be closer to perfection than other languages (if no errors were made during its creation). If other countries won't accept it, they'll be cut off from the rest of the world, as easy as that. And who can possible have something against a new, more efficient language which will solve all linguistic problems all over the world at once?
Introducing this language would take about 20-25 years, since integrating it into everyday life will take some time, and all Humans have to learn it.
Main problem, I think, is the fact that the world is seperated in countries, so if one or more countries create this language, the other countries won't as easily accept it as when they would have taken part in its development, therefore it's important that as many countries as possible will work together on this project.
It does indeed seem like a lot of trouble (which it is), but the reward will be more than worth it.
Compare this to getting up each morning: you know that it would be better for you if you would get up immediately, but you feel such a reluctance against getting up that you stay in your bed until you're (almost) too late for work/school/appointment.
Compare laying in your bed as the current situation with dozens of bigger and smaller languages. Realizing that getting up will be better than staying snoozing in your soft warm bed stands for realizing that one language will be better than multiple. The reluctance against getting up is when we try to convince ourselves that the current situation isn't so bad actually, even though we know that it is.
On a medium like the Internet you can see already the effects of of globalization: since they don't speak one common language, they choose one, which is English. Although there are many sites in other languages, there will always be one standard language.