Some say that Otaku
(おたく) is a way of life, a hobby, some say that it is when someone is obsessed by every and all things Japan. (anime, manga, culture, language, etc...)
Who is to say?
Be it a smidgen of curiosity or an extreme addiction
The only person that can decide that is
In some ways, to a degree, being an Otaku means that you were exposed to things that you would normally not experience.