Aww, yes. I sort of have a "band of misfits" as you put it, with these kind of people you often feel alone regardless because they keep to themselves. I am probably the most social of these people and that isn't saying much.
It isn't my experience that mainstream culture is asking us to care about nothing, more like "care about everything or you're a terrible person" but that's just my experience.
You are not crazy. However, these unpleasant thoughts still do come every once in a while and I think that's for everyone especially in this kind of world. Love you.