And then you have Korean.

오늘 학교에 가기 싫다 (I don’t want to go to school today)

Hangeul is a syllabary so anyone can read it, just like Latin. It was specifically designed in response to peasants not being able to read Chinese hanzi.

Things like the subject and topic can be and is omitted when it’s superfluous. (The above sentence omits the subject and subject particle. There is no topic here). English almost always needs to specify the subject, asides from very casual speech/slang. Korean, like english, doesn’t need to specify gender of nouns, and it also doesn’t need “a” or “the” markers. The location particle above could be dropped too.

However Korean does have complex honorifics and formality conjugations, which typically get longer the more formal/polite it is. Above we have the plain or dictionary form, which is usually the shortest form as well.

How would you express "would like"?

"I don’t want to go" and "I would like not to go" express different things.

One is expressing opposition right now, the other one is expressing desire or even a request, potentially while the action is already engaged. The first one is definitive, the second one is wishful thinking or negotiation.

I don’t see any practical difference other than using more polite, indirect language. The effect of “would like not to” is the same in the end with opposition.

I don’t think there’s a 1:1 translation of “would like not to”. I’d probably say something like “it’d be good if I did / didn’t do X”. Which is less direct than the equivalent “I do / don’t want to do X”.

Actually 가기(가) is the topic here unless I’m mistaken. I wrote this too fast last night.

I painfully agree with you, as a French. So much so that I comment my code in English for brevity.

Regarding "aujourd'hui", this monstrosity litterally means : "to the day of today"..

Our dear language needs a reform, lest it will survive only as a roman dialect.

What French really needs is a comprehensive spelling/grammar reform. In Haitian Creole, "ne pas aller à l'école aujourd'hui" is written simply "pa ale lekòl jodi"! And one can just write "mwen" instead of having to differentiate "je" and "moi". (There's also a marker word "ta" that's entirely isomorphic to the English "would" in that it introduces a conditional modality.) Not coincidentally, English is basically a creole language as well. That's why it's so incredibly simple.

English has like 17 tenses, many languages only have 3 without any loss in expressivity. When learning English you need to learn each word twice (once to write, once to speak) - that's not the case with many phonetic languages.

English isn't inherently better as a world's language than anything else, it's just there, so it benefits from the network effect (it's more beneficial to learn language that has the most users, so it gets even more users).

In colloquial Japanese that would be three words: Kyou gakkou ikitakunai. The first word is "today" (unconjugated), second is "school" (unconjugated), and the third is the negative "wish" (volitional?) form of "to go" (iku > ikitai > ikitakunai). Subject (the speaker) is implied and neither the time nor the the topic/object needs to be explicitly tagged.