One thing that has helped with ease of use is Overleaf. It is a hosted LaTeX editor with lots of collaboration features (leaving comments, history of edits) that let people collaborate in real time on a paper. It comes with many templates to get you started on a new document. If you're working with collaborators, it has a lock on the market.

LaTeX itself can be easy for simple things (pick a template, and put text in each section). And it can grow into almost anything if you put in enough effort. It is far and away the standard way to write math equations, so if your document has lots of formulas, that's a plus.