"There are several reasons why one should prefer LaTeX to a WYSIWYG word processor like Microsoft Word: portability, lightness, security are just a few of them"

I agree with most points but seriously, lightness? Have you ever downloaded it? The program is about 750MB (Source: http://www.tug.org/protext/), and that's for software without an elegant UI. To compare, the ENTIRE office package is around the 500MB, that's Word+Excel+Outlook+OneNote+Groove.It does produce very nice results, but it isn't light (in terms of space).