Although Esperanto doesn't really have a culture, it is very useful as a gateway language.
As an Aussie wth Jap heritage, I struggled learning English. My parents still are trash at English.
Meanwhile, Esperanto isn't all that of a pain.
Say, if you are an English speaker, it is much easier to even learn languages like Chinese, Japanese or Korean if you do so after you learn Esperanto. Esperanto is a gateway to different cultures, which makes your life easier learning other languages.
In Australia, language barriers for English exists cause English is a bulls*** language. If Australia spoke Esperanto, the language barriers wouldn't be that bad, ESPECIALLY FOR ASIANS.