Well if you really want to get into the philosophy of this, it is important to first acknowledge that concepts like "society", or "property" are completely fict

Well if you really want to get into the philosophy of this, it is important to first acknowledge that concepts like "society", or "property" are completely fictional, made-up ideas, that people simply invented. It's not that different from kids playing pretend in their parent's basement, inventing any rules they want for their game. They can do whatever they want, because there isn't anyone else around to tell them differently. A lot, I mean a _lot_ of people do not often think about this fact, they sort of assume that these concepts were handed down by some impossible deity (god is not real.) But the truth is they emerged from intelligent self-aware people who for various reasons simply decided that these things should exist. So with that in mind, if property is make-believe, how can you "own" something? What precisely is ownership? Just more make-believe, using different words. If it exists at all, it's a social contract, and when it's you versus everyone else, hate to break it to you but it means nothing.