It is a fascinating culture, and I do enjoy some anime/manga, but I don't see myself converting and assimilating into that culture, or any for that matter, including my own. The fantasy involved in things like anime, cosplay, etc, is very alluring, but it's really a tough culture sometimes, and relies heavily on social hierarchies, and involves many pressures as far as going to the right schools, and working at the right place.
I think, at least for me personally, other/different cultures hold an appeal because they are different, kind of how for me I tend to get along better, or at least feel more comfortable around, people that are a different gender, age group, ethnicity, etc, than I am. There is a perception that there is less chance of being compared and judged.