Is being bilingual such a bad thing?

I've seen a couple of questions regarding Dora the Explorer and how she speaks spanish. God forbid children grow up to be bilingual or trilingual. Dora has nothing to do with "Brainwashing" as some called it, to accept those of who are Hispanic/Latinos, it is simply a cartoon and an educational one that teaches two languages. If that is too hard to accept, then some people should go live in a cave.