What Kind of World Is This?

After arriving home last night around 7 and unpacking the entire car by myself, with zero help from Baxter, I emptied every bag, every suitcase, every box that I had brought back with me, putting everything away. There was some trash, including a pumpkin that was on its way to nastily rotting, so I took it all in the backyard where the alley is. Everyone has a green plastic trashbin that belongs to them. It stays in the alley at all times - at least mine does. But last night, while I leaned over the fence to dispose of my garbage, it was missing. Someone stole my trashbin! I walked up and down the alley last night and then again this morning with more light but nothing. It's gone. Vanished. Disappeared. Why would someone take a trashbin? More specifically, why would they take mine and leave everyone else's? This doesn't seem fair. There is a conspiracy about and I intend to solve it.