I gave OpenOffice like 10 chances and all time it was a fail.
It wasn't stable. Idk why but it kept hanging, not that Microsoft's products don't do that. but MSOffice 2007 was a huge improvement.
Next, non-geeks (which make up more than half of the world and all of my clients) don't use "Open Office" and opening my files is a pain for them.
Third, even if I get them to work cross software, not all features are available so can't open client's files.
Fourth, it doesn't have as many features as Office 2010.
I love this quote on Open v/s Closed Source debate
"People don't care if it's open or not, people care if it solves the problem or not."
I mean honestly, why would my mom care if it's open source? ha!
Yea Google Docs is the next stop. Just that can't use it offline.