QSA you go ahead and unload on us all you want. I can sure understand wanting a break. I don't even want to go out on my porch anymore because all I see is more and more that I'm trying to feed and the shelter is on overload.
Sometimes I think you do need a bit of time away just to relax. I think you need a small vacation and if that means just staying home with the brood but ignoring the phone for a day or two then so be it.
It will never end and like I have been told many times here on PT... You can't save them all. If you don't take care of yourself then you won't be able to take care of all the kitties that need you.
Hang in there and take a break. You will feel lots better and be back at it in no time!!!