I wonder why more people don't know about free office software.
Because many assume that you must use MS products. OpenOffice has been around for years and I have been using since the very beginning. LibreOffice is "newer", but is also an excellent alternative to MS Office.
For that matter, there are GREAT OS options that would meets the needs of most users that are free as well, but that is a different beast altogether (as in Linux).
Many "believe" that you must pay for quality and ease of use. Obviously, that is not the case at all today.