Word is for folks who don't know any better (or simply don't care), or who can't use anything else in their line of work.
I actually take more offence at this than anything else in the diatribe.
I use Word. A lot. I care deeply about what software I use. I have used a lot of different word processing packages in my time so have a great frame of reference, and am probably one of the more evangelical Scrivener users (hell, I even developed an entire new interface for LitnLat to include with the program - and Scapple - for free). I am not obliged by anyone or any organisation to use Word, or to provide them copies in Word format.
I use Word because for some tasks it is the best. It's a powerful word processor and it's easy to use. As with any software, there are some aspects of the program that are buggy (the ability to add formatted bullets to a user-defined style sheet, for example) but they tend to be features that only power-users are likely to notice.
It's not possible to wear out software through use, but if it was both Scrivener and Word would show very heavy signs of wear and tear on my machine by now, and I'd definitely buy both again if I had to.