Many people believe that if you have travelled or lived overseas, you are tainted with foreign influences and can never be, truely, a native again. This is a particular problem in rural homogeneous societies like Japan, France or Alabama.
Knowing that you have seen the way that "others" live, practice their religions, and eat strange foods gives you a different perspective on life that the locals will never have and makes you "suspect."
What are your experiences with being "tainted"?