I totally hear you!! When I was back in Canada last year, same thing...when I'm in Peru I miss my family and friends and some of the conveniences that are harder to find here....when I'm THERE, I miss Peru, the food, my colleagues, friends and lifestyle here too....not sure where we can find the best of both worlds?!
But my friends back home think that if I were to return, I would find Canada really dull and boring after Peru...that's also what I hear you saying,and there is some truth to that!!
Good luck with the readjusting!