1. To avoid racism
It would be racism when other race such as the westerners cosplaying our Anime/Asian characters because impersonating other race are racism no matter for what reasons it is, there are terms for that kind of racism which are the "colors name face" terms. Those westerners action of cosplaying our Anime/Asian characters are the same as the action of impersonating us Asians because those westerners are impersonating characters that we Asians created based on our own Asian race facial & body form. The meaning of Cosplay is impersonating certain characters which proven by how peoples who do Cosplay which called as cosplayers are trying to look like the characters they are cosplaying, not only in appearance [ hair styles, costumes, accessories, etc ] but also in personality [ attitude, pose, facial expression, etc ], those cosplayers themselves are even claim as the characters they are cosplaying when peoples are asking them of who they are.
2. To avoid ruining our Anime which also to avoid hurting millions peoples who are the fans of our Anime
The westerners who Cosplay our Anime/Asian characters only end up failing on cosplaying or failing on looking like our Anime/Asian characters, as a result they end up ruining our Anime/Asian characters which in the end hurting millions peoples who are the fans of our Anime. Those westerners will never succeed on cosplaying our Anime/Asian characters because we Asians make our Anime/Asian characters based on our own Asian race facial & body form and only us Asians who born as Asian in this world, based on our Asian's :
- Almond shaped eyes while westerners born with deep set eyes that sink into their western head that make those westerners can't look adorable.
- Small nose while westerners born with long nose that make those westerners can't kiss frontally because their long western nose get in the way, unlike we Asians and our Anime characters who kiss frontally that made possible by our small Asian nose.
- Round face while westerners born with square face that make those westerners can't look cute which is the opposite of our Anime characters cuteness.
- Sharp jaw while westerners born with square jaw that make those westerners look masculine which is the opposite of our Anime characters femininity, many of western females even look like males.
- Smallish body form while westerners born with big wide body form that make those westerners look like adults with unhappy childhood who trying hard to stay looking like a children when cosplaying our Anime/Asian characters.
- Youthfulness while westerners look way much older than their real age that make those westerners look very wrong or look like oldies on their 2nd puberty when cosplaying our youthful Anime characters.
Those westerners should be proud of their own race by stick to Cosplay their own cartoon/western characters, those westerners also must realize that we Asians and our hundreds millions Anime fans have more rights over our Anime than any of those westerners so those westerners just can't do whatever they want with our Anime or with our Manga and our other Asian stuffs.
Cosplay are not for fun but to impersonate the characters