(Photo Credit: Zele Performance)
If the quality is the same then what would the issue be? Just to say mine came from Japan? If buying more expensive parts (although not always better quality) makes you feel better about your car then go for it. Just a lot of people don't see a point in spending more money for a very similar product that they can get for less.
If you don't like replicas then don't buy them. End of story.