Fellow Dutch speaker here. Why in the world are you a big fan of our language? Just because it's your own? And German, just because it's so close? Both languages are horrible to learn compared to English.
But my point was (typing on mobile so maybe I skipped a beat there) that although I like these languages, I think they are indeed impractical and we should just adopt English or Mandarin.
Edit: also, where does that statement 'horrible to learn' come from? Honest question; I'm not sure how it works; not trolling here. We (the Dutch) are quite lenient with languages and I know why I am anyway; my German is as good as my English and my French and it did not take much effort learning these. I was not a very smart or particularly hard working student but when I grew up there was UK television, German television (the best of the bunch), Dutch television, Belgian television (was very good and original compared to Dutch tv as well, and with shows like Undercover very much back in the game) and French television; I learned most of my practical languages from watching scifi and horror when I was a kid.
I had French, English, German, and Dutch in school. I'm a native Dutch speaker. English was easier than any other language. I'm pretty sure my English grammar is better than my Dutch right now. I mostly understand the d/t rules in Dutch by now, but I'm not always certain. French, German, and Dutch classes kept introducing lots of random rules that serve no purpose. At the end of high school, the only language I could hold a grammatically correct conversation in was English and my native language, and write a grammatically correct text only in English (not Dutch, or at least not without avoiding certain rules by rewriting sentences).
English classes also introduced some silly random rules at first, but once you get beyond the a/an, learn a hundred or so irregular verbs, and a few other such things, you're mostly done and it's just vocabulary and expressions/sayings left. You can't really get around the latter, but the former can be kept as small as possible (only the useful features like indicating possessiveness or plurals, not differentiating between whether the object you're speaking about is {male, female, neuter} × {active, idle, giving, modifier}). And the German sentence structure is more convoluted than necessary (I forgot most of my French, maybe theirs too), plac[1] the second part of a split verb so far at the end of the sentence with lots of words and qualifications in between that you lost track of what came before when you finally reach the end of the sentence especially if you can't really read German fluently [1]ing, but maybe that just takes some getting used to.
Would trade putting genres into english if I could also get the German consistency in spelling any day, though.