I guess I have better things to do than look for reasons to be offended, so no, someone saying that the USA, or South Dakota, was their "home away from home" wouldn't bother me the least as a lifelong resident. To me, thats quite simply looking for a reason to be annoyed or upset, and in a world full of valid reasons to feel those emotions, I don't have the need to go in search of things to offend. If someone using an innocent phrase to describe a place they are fond of upsets you to the point of being offended, I think the issiue lies with you and not them, personally.