So many different fandoms…

Sometimes, I’ve been thinking about how many different fandoms there must be. I encounter other fanfic writers online and many times they have quite a few fandoms too, but not one single fandom is the same as any of mine. Or they might have one or two in common with me but nothing else. I write or have written in about 100 fandoms, counting the Nordic ones, but of course I’ve read and been involved with many other fandoms that I haven’t written in. At least several hundred. Especially if I’m not counting just tv and movies, but books too and I know there are plenty of other mediums as well. Can there be literally millions of fandoms? I suppose it’s possible. In a way, I wish there were better ways of finding the ones I’ll like and passing by all the ones that don’t seem interesting to me. It would make things easier. Now I’m not just talking about fandoms I might write about, but also any I might like to read and/or watch.

How many fandoms are you involved in? Do you know?