You are right. Just like we should all just be using Word 97 on Windows 95 because, you know, word processing is just word processing in the end, isn't it?
I take it you don't remember the Office 2000 -> 2003 upgrade debacle and peoples unwillingness to just get on board. Most people I know simply skipped 2003 and only reluctantly hopped to 2007 after much gnashing of teeth. I still know a handful of people still using Word 2000.