What Do People Assume About Fanfiction Writers? What Creates this Stigma?

I’m sure you’ve heard it all before, someone talks about a fanfiction they wrote when they were younger and they receive a judging glance. They might get something like, “You write fanfiction? Isn’t that for teenagers?” This is a phrase I have heard all too often. Aside from this statement, there are many other claims that people make about fanfiction writers that simply aren’t true.