They cana make us behave differently and be aware of what we do. A cup isn't just for gettin liquid inside us. Take tea (of course tea). It started as a medicine and became a drink, in China first, five thousand years ago. By the 8th century, it had become very rarified (Imperial tea was harvested in the morning to the sound of drums and cymbals. The women wore silk gloves to pick it). For the Japanese, it expresses harmony and beauty, enhanced by the vessels that form part of the ritual. Literature, architecture and language have all been affected. Someone who is too aesthetic is describes as having too much tea in them, while those who lack sensitivity are described as having too little. In the west, the objects, the rituals are still seen as having part of the allure. Do you have enough tea in you?
Now take that mass of history and heritage and then read this. I dare you not to get annoyed.