What Chuunibyou moral and story's meaning is:
“People always say they feel awkward about having eighth-grader
syndrome. They say that they don’t want to talk about it, that they want
to forget about it for good. But does that really get rid of our crazy
old selves and their wild fantasies…?
It was back when we thought we were special, when we thought something greater watched over us? We had a special purpose in our life? People sometimes tell lies, imagine a completely different fantasy world, dream about the distant future. Or invent a lover’s relationship that only exists inside their heads.
This process repeats from the day we are born until the day we die. Forever and ever.
It is depressing.
It is shameful.
But it is dear to us.
It is an illness known as self-consciousness.
It is something we must all face known as “ourselves.”
Indeed, we carry our eighth-grader syndrome throughout all of our lives.”
(And I hold true with all it says, it's why my hobby and the world of art and Anime never left me :D I was just like Rikka)