'Writers can't stop writing even if want to. Stories are always popping in their heads.'

Not all writers produce 'stories' and many can and do stop whenever we like, and regularly take a break due to lacking the inspiration or having more important things to do. The above characterisation of 'writers' is clearly slanted towards novelists over the many other kinds of writers that exist. (FWIW I am a 'published writer' in that a small part of my day-job is writing industry articles. As my team collectively has to write a certain number of these per week, I can & have ducked out of it when I'm not inspired and built up a buffer of material when I am inspired).