I disagree that it's the most popular way of working. Perhaps that is true just in mathematics, physics, and maybe even computer science but unlikely to be true

I disagree that it's the most popular way of working. Perhaps that is true just in mathematics, physics, and maybe even computer science but unlikely to be true in many other fields. Let's be realistic and realize that the majority of people do not use LaTeX. The ones who do use it, use it because they are putting in a lot of mathematical formulae which are easier to do in LaTeX than Word (although Microsoft is making progress with the equation editor) and the formulae look way nicer in LaTeX. Word renders the formulae into an equation that generally looks bad and scales worse. The things that I use LaTeX for are usually my own writing that I don't have to collaborate with other people for. If I have to work with other people I use Word. The things that I like about latex are that I can have it automatically generate my figures because I can script it, which I can't do with Word. I agree that LaTeX can be difficult to write but you have to realize that word has it's shortcomings too (put an image in and send the document to somebody else, chances are the layout will get messed up). Tools like pandoc are trying to alleviate both problems so people can work in whatever environment they prefer, which seems like a good solution to me. I could write part of my document in markdown, convert to LaTeX and write my formulae and then convert to Word so my coworkers can edit it easier.