Treats.... definitely

At 3, imagine knowing what "good candy" is. That's sad. I don't recall trick or treating and getting to select out of someones candy bowl. I recall going to a door, saying "trick or treat" and having a treat dropped into my bag. None of this "take a piece or two". Perhaps this is what is driving a 3 year olds desire to self-select thereby customizing his bucket of treats to his own liking. Our little frog said on more than one occasion (in between saying "I want to go to that house") "do they have good candy?" I hope it's not going to evolve into greed, and I hope it's not something I have really taught him. I hope it's something that can just be "what a 3 year old does".