It's a relief for the most part. It's uncomfortable having everyone know your story before you can even tell it. Or decide if you wish to.
It's quite alright. Everyone that has shown up from my world is either a witch or a wizard. When I say world, I mean it in a mostly vague sense. It's how they explained things in Tumbleweed. Everyone's world is just the fictional (to the people of this place) story we've come from. The Quidditch Pitch is a place from my home. It has brooms you can use, but to my knowledge, we have not mastered building one. Perhaps it is something to attempt in the future.