Re: A (La)TeX user writes:
"Having used both LaTeX and Word for some heavyweight documents, LaTeX at least has reproducible results whereas the smallest correction to a Word document has been known to corrupt pagination, cross-referencing, numbering and goodness knows what else."
Pretty much this, indeed. LaTeX is a compiler and all output is the same if input is the same. There is no random number glitch for every enumeration like for Word.