[ljm]

It’s mostly a case of confidence I think. When you write you have all the time you need to get the message right and tweak it to perfection, when it comes to speaking you don’t and you need to work on your sound in order to be understood. You can’t speak and instantly know how to write and it’s the same in reverse.

Speak too slow or sound unsure and plenty of people will default to English to give you a hand instead of waiting for you to figure it out. It has nothing to do with the phonetic simplicity, although it does help when you compare it to English, for example, which might as well be lawless because there’s practically no connection between the spoken and written form.