Why spend money just for the sake of it? Rich people don’t stay rich by spending their own money. I’ve always had a starving student mentality as wasting money

Why spend money just for the sake of it? Rich people don’t stay rich by spending their own money. I’ve always had a starving student mentality as wasting money on junk is just that. For any big purchase of more than three figures, wait a month. Do you really need it?