Nothing Is O.k.

My linguistic gripe?
It may sound strange, but o.k. is the winner for me. Maybe I’m a little more impassioned than some people and just can’t stand something being only o.k, or maybe in the small area in which I was raised, even just the home perhaps, o.k. means something along the lines of “if I have to.” If I have to respond somehow, if I have to do what you ask me, if I have to agree with you even though I don’t want to.
Where the hell does o.k. come from? Who decided that those two letters should signify not something great nor something terrible, just something mediocre enough that it doesn’t deserve a full word?
Nothing is o.k. Not the crappy tuna salad sandwich I had for lunch, nor the test that I didn’t study for yesterday. It’s definitely not o.k. to respond to someone’s opinion with o.k. That may be the most insulting way to dismiss someone’s opinions.
Like other common phrases, o.k. means absolutely nothing. Nothing. And to the perpetually curious like me, it tells zero about what the speaker is thinking. What would you say about how you slept if not for those stupid letters? How about peacefully, sufficiently, or shittily? What are we hiding with o.k?
I annoyed my boyfriend a few weeks ago by responding to many of his texts and messages with “Sure.” To him, it seemed like a begrudging answer, and now I see what he means.
O.k. is only o.k. when simply accepting what the other person has just told you. I think Michael used it pretty well last night when I told him I was going to go outside to my car to look for the book I need to study for an exam tomorrow . What else could he say but o.k? Good luck or hope it turns up or put some shoes on, dumbass it’s thirty degrees outside are much better to me. But I was willing to walk away from that computer screen with only his acceptance and the o.k.

Who's with me? When is o.k. just o.k?