Hentai Tag

I know there's probably a post like this somewhere, but I was wondering, why do we have a hentai tag?
Almost all of the uploads are hentai and we have a non-h tag. Is a hentai tag really necessary?

For fucks sake not this question again.

Not everything that gets uploaded to Fakku is Hentai. Hentai tag's to differentiate between "Ecchi", and "Non-H".