Believe it or not, I have been in the exact same situation.
I used to wonder whether I should write in english, spanish or italian….
…at the end of the day I still think that the most important thing is to write, no matter the language. I am here to share, to have fun, and to leave a memory of my day-by-day experience. Should I be writing for a living ‘audience’ would earn a different meaning.
For you, just try to understand how much ‘audience’ is relevant to you, then you'll know what to write and which language you must use.