I am using Word for long and I feel comfortable with it. On the other hand, LaTeX is a good tool to work with if you have the template. It is a bit time consuming in the beginning, but with time you will find it easier. The end output is much better in LaTeX compared to Word.
LaTeX gives better results for scientific documents but it is more complex to use as any document needs to be compiled. At the opposite, Word in interactive (no compilation) but offers less possibilities to format the document. In addition the mathematical formulae appear well written in LaTeX. It is less the case with Word.