I can understand why people just don't get it. I'm sorry you're not feeling much understood regarding this subject matter.

I think I might understand though. You've taken a much beloved character and created a reality around them to the point where living it is much more desirable that living outside of it. It's not so much a fantasy, but a reality weaved in the mind as a means to cope with something in your life you'd rather not deal with.

I'd seek out a therapist and discuss this conceived reality you've become the soul architect to, and figure out a way to not get rid of it entirely, but weave it into the way the rest of the world perceives reality in a way where someday you can function in society and process the world around you without inhibition.