Recently got a note from a friend back home that's lived as an expat several times over. His comment hit the nail on the head as far as my current schizophrenic sentiments about living abroad. To quote Stuart:
"it is a bitter sweet experience. comparison and contrast. homesickness. hating all that home stands for. hating everything about your new home. loving everything about your new home. making excuses for home. apologism. standing up for home. patriotism. Wondering why these other folk just don't seem to be able to get it right. Wondering why home can't just get it."
I'd give that one a bazillion kudos.