You are wrong - not knowing how to do it (and now finding out I can't) is exactly why I am in the forum. LOTS of people would like to be able to do that - especially business users.
I think you are talking from a different, although valid, perspective. Doug, Paul, and Pam have been helping people use Word for a very long time. They've seen what problems most people are having and the estimate that 99.99% of users don't care about being
able to rearrange pages is likely correct; it is based on observations and hard data. These people have addressed the concerns of thousands of users. Your observation, that you care about this ability and the lack of such an ability, is also valid. And, 0.01%
of Word users is a LOT of people simply because there are a lot of Word users.
My observation, as both a user and someone who has been on these forums for a while, is that most Word users want to be able to type something and print it or send it to someone. They do not spend a lot of time editing or rearranging. If anything, many more
people want to be able to move ideas around in a document, to make it more readable or persuasive.
The thing is, my understanding is that Word really does not know much about pages. For Word, they are a bi-product of printing the document. In ordinary word processing, text flows from page to page and when text is inserted something gets bumped to the
next page. Margins are changed, text reflows.
Word does care about Sections and paragraphs. It keeps track of those every time you type something. It does care about headings using heading styles. It knows where these things are, all the time. Where pages are will change depending on your printer, your
margins, your page orientation, and other factors. Word really does not decide where pages are in a document until it is time to print it.
Why use Microsoft Word’s built-in heading styles? by Shauna Kelly
If you organize your work using heading styles, those can easily be rearranged in a Word document, complete with lower-level text. You can set the formatting of a heading style to have a page break before it, if you wish; that way by telling Word to use
that heading style, you also tell it to begin a new page. If you don't type too much text, everything under that heading will remain on one page. Such pages can be easily moved in the Navigation Pane or in Outline View. It is also easy to generate a linked
Table of Contents and update it when things are moved. Word still isn't seeing "pages" when it moves something, it is seeing logical constructs that start with a heading style. However, that may do what you want.
If you cannot be troubled to use the tools Word provides or they do not work for you, perhaps a different program would suit you better. PowerPoint organizes things by slides. Text does not flow from slide to slide. If you add text in the middle of a slide,
the following text may fall off the bottom, but it does not move to the next slide. Slides are easily rearranged.
Both PowerPoint and Word are complex programs. Both are easy to use to just produce a quick and dirty result. Both become a bit more difficult when you explore their limits. I have a much better understanding of Word but I don't really think anyone (including
Word's designers) understands the entire program and the interrelationships of its functions.
Understanding Styles in Microsoft Word
Basic Formatting in Microsoft Word
Complex Documents
Sections / Headers and Footers in Microsoft Word 2007-2013