Because it's easy to use it's dumb... pfft.
It's clear what people prefer, MS Office stomps mudholes in all other commercial office suites. I'd bet most people didn't even know Corel still makes Word Perfect.
If you write something in a word processor that you want someone else to read, you'd better be saving in Office format.
BTW, silly pet names used to show your anti-Microsoft sentiment is stupid, especially when you use their products.
