To any fic writers who worry they are wasting their time... I read a fic for a relatively small and inactive fandom about three years ago. And there was one specific scene where a character watched another dancing like an idiot to a beyonce song and it was so sweet and loving that even now years later I have that song on one of my spotify playlist so every once in a while it will play and remind me of that fic, and every time it does I smile and feel a little happier.
The stats on a fic will never really tell you if your writing touched someone. There's no numerical way to show you what impact you made. Maybe you are wasting time, or maybe you are writing something that someone will remember for a long time, something that will never fail to make them smile.