Google Chrome and Chromebook sucks, but Microsoft Office is a big steamy pile of monopolistic crap. I installed OpenOffice four years ago and never once looked back. Now I use LibreOffice and it’s awesome, and their Calc is way better than Excel.
Using Microsoft Office is like using Internet Explorer: maybe you actually NEED to use it because of some corporate bullshit, but chances are, if you use it, it’s just because you’re an old fart/uncultured yobo who doesn’t know any better.
Also, can’t ChromeOS run Wine and run Photoshop and stuff on it? I never thought to try it, I’m not really sure it would run.