I have a question for you. It's not mandatory to answer (is anything ever mandatory?), although I'd be very interested in hearing what you think -
If Hogwarts and that whole wizarding world was real and actually existed in the world, but you were NOT a witch or anything magical (i.e. you were a Muggle), would you want to know that that world really existed?
This popped into my head a few days ago. Initially, I thought, "Well, of course I would..." but upon further reflection I decided that I wouldn't want to know. Lord knows that I would LOVE for it to be real. No joke, if heaven is real, I hope mine includes Hogwarts. * But to have something like that so close yet so far, as they say, would be incredibly difficult to live with. I wouldn't go so far as to say that I'd be bitter my whole life about not being a part of it, but I'd most likely be some mix between really sad and really happy - wistful, I suppose. I wouldn't want to have to keep thinking about what could have been and I wouldn't want to have to compare everything in my life to what it would be like if I was a witch... I wouldn't want to be driven crazy by a desperate wish to be involved in a world that I could never truly be involved in. I mean, I wouldn't want magical folk to avoid me (I'd love to be friends with Harry Potter, even if I didn't know he was a wizard) but I wouldn't want them to cast one spell and then walk away forever. (o noez, emooooo)
That said, I'd make an exception if a close friend/boyfriend/family member was a witch/wizard. In that case, I'd definitely want to know. Also, if I encountered that world first-hand, I wouldn't want my memory erased (like whenever a Muggle sees a dragon or whatever in the books, they have people from the Ministry who erase it from their memory), although really, how could you know that that world existed unless you experienced it first-hand? I'm not sure of the logistics of that, but I still stand by my answer.
* Some hard-core Christians would probably see this as sacreligious. Luckily, I'm not religious.