Mostly my pages are flights of fancy. Therefore I find it easier to flow into a Word document. At that stage it's not about formatting, capsules, puictures, etc. - it's about capturing a train of thought. I then polish, edit and tweak within Word until I have a document.
Then I find places to separate the text and build capsules and pictures into a Hub page. There is still a need to polish how it looks on the page, and then publish.
One benefit of the Word approach is that I have a copy of all my bits of writing, just in case the site crashes or disappears.
For some pages though I do use the direct to Hub Page approach. That is when it is more about the look and feel of the page rather than the text.