For me, I often hate where I am, and I got a little hurt when my partner slammed me out of my dreaming when I was looking up the kind of acreage I would like to own one day with him, so I told him that when my body is stuck in one place, I let my mind fly to the places I want to be, I take the joyous occasions that could be mine one day, and come back to my body feeling a little more mentally refreshed, at least that way one half of me gets some reprieve from all the crap that happens.
My day time dreams and thoughts take me to places I know I can reach one day, anything is possible, and so when my partner can't see past my latest crappy day, its me that offers words of encouragement to help him along.
Another very important thing to note is that sometimes people actually enjoy being ill, sometimes a lot, sometimes a little, as being able to complain about it brings attention to us when we are not nutured.
Now please don't get me wrong, I know firsthand how having PTSD ruins days on end, from my perspective, wanting to be sick is comparable to that of wanting to stay angry at someone when you know you could go patch it up, sometimes we prefer having a physical reason to support the non physical responses that we have, because if we don't, then we have to waste energy explaining it to the less discerning.
I'm not sure if I'm making any sense, does anyone have any thoughts or clarification?