The attraction I do feel is 100% towards fictional characters without a doubt because I'm something called fictoromantic.
This is the part that would concern me as a parent. In my totally uneducated opinion, only being attracted towards fictional characters suggests a certain inability to connect with real people, and by extension, an inability to accept normal human flaws. I imagine that trait can easily lead to a pretty isolated life of only surface level relationships.
I’d be curious to hear an opinion on fictoromanticism from a psychologist. It sounds like you do have romantic feelings, but some protection mechanism has focused them on fictional characters since they are inherently safer and more controllable than a real human being. That’s just my armchair psychologist speculation before my morning coffee though, so apologies if I’m coming off as offensive.
At the end of the day, you do you and I hope you find happiness.