Even if the average person doesn't need MS Office for their own work, there will always be this one prof that emails homework assignments in MS Word format, or the accountant that sends you an Excel Workbook to fill, etc.
Yes, if you're a programmer you can probably get away without Office. But for many people who collaborate with others, having a copy of Word / Excel / Powrpoint is still pretty much essential.
(Side note: I hate people who use Google Docs for their presentations. "Oops, I guess I shouldn't have pressed the back button". "Sorry for the delay, the presentation should load any minute now". "Could everyone please turn off Wifi on their phones so the speaker can open his presentation!")