Does money define who we are?

Does the way we spend our money define who we are? Can money define who we are? We can all agree that money is a very important thing to more or less everyone, so since it is that important it must mean that you can define each person from what they buy. But why do people choose to spend a lot of money on things that they don’t really need? One of the most common reason for why people feel the need to buy all the newest brands, is that it makes you fit in. Another reason could be that