What about something you've made for fun but haven't made any money from? Should someone else be allowed to sell and profit from your work?

I'm not expecting to be "passively paid" for my hobbies. But I'm expecting that someone won't steal and profit from the things I make. Why would that be fair?

So no authors, directors, or any other creative work that can be stolen & duplicated? Why don’t we get rid of patent laws too while we’re at it?