When experiencing a product, the experience is not just the product. Its also about the association that you make with the product. Its about the feeling of familiarity that comes for free with it. The stronger the association with that feeling, the more incapable you would be of actually having an unbiased opinion about it. One example that comes to my mind is when I ordered a fancy soap bar after reading its description - it smells like sweet vanilla and orange. In this case its not only about liking the smell of the soap, its also about the association that you would make with the smell. The moment I started using the soap, it reminded me of a detergent used to wash clothes in India. So it was not the actual product itself but my association of it with something repulsive that ruined the experience for me. If you want a product to be acceptable to a global audience, it becomes important to work with people from a diverse set of backgrounds so that they can make different sets of associations with the same product. It would leave you culturally more informed and prevent you from committing product experience faux pas.