I am one of those annoying LaTeX people now, so my “word processor” ends up being tmux, NeoVim, and Nix, but I understand that that’s not for most people. LibreOffice is honestly fine nowadays. I feel like Excel is probably a bit better than Calc, but Calc is still capable enough for most tasks. The documents look decent enough, it’s easy to use, it’s reasonably fast, and you can’t really beat the price. I have to ad…
It's a scale. While straight up writing TeX is not for must, there's also stuff like LyX and TeXmacs.
As it stands, the compromise that I do is write Markdown and render it to LaTeX or XeLaTeX with Pandoc. Not claiming it's the "best" or anything, but the documents look nice to me and Markdown is easy to write.