What to do if someone is re-uploading my work?

I've had people re-upload my work sometimes. I know it's frustrating, but at the end of the day, I'm uploading my stuff so other people can enjoy and use them for themselves. I just put faith that simmers will find me eventually and realize that I'm the original creator.

I just remind myself:
I'm not making any money.
Downloads/favorites don't give me any real benefits.
I'm not using CC content that I've created.
I'm doing this purely for fun and making others happy.