Well, it's nice that you took my sentence out of context. The point was, I see people all the time bring out Word to make a shopping list, or a simple letter. It's overkill and unnecessary. In short, it's not the best tool for the task. Yet I see people do it all the time. And because it's not the best tool for the task I do wonder about it. The fact that your professor demands it for your homework is irrelevant.
How did I take it out of context? I wasn't disagreeing with you. I was pointing out one of the reasons I know of that people choose to use it for everything. I don't know where your attitude came from or what the reason for it is, but alright.
In my case... Because I need to use it so much, and everything I get at work and in grad school comes to me in Word Docs. I use it for everything... because thats what I am used to using. When I am writing on a computer that is. I have never even thought to look for an alternate option, so I am sure it is the same for others.
For the things your describing, like shopping lists and such. I do that on my phone in the Notes app.
ADDITIONAL: I cut out the rest of your post to make the quote box smaller because that was the portion I was addressing.