Maybe it's because I don't need all the features that others do but for me, LibreOffice just works. I want to create a document where I can use different fonts, create tables, add images, write text with headers etc. LibreOffice allows me to do this. I never got the love for the "modern" look of MSOffice. I can then export to a PDF or even EPUB, though I never do export to EPUB. Same with the calc app, I really only use it for a couple of easy calculations like adding substracting so don't need it more than I already do.

I honnestly think LibreOffice would be better with more templates, that's the one thing I think MSOffice does better. Isn't Open Office dead?