It's partly marketing by businesses. They need to continuously sell goods and services to stay in business, but we in the west live in an affluent society where most people's basic needs are met, so they have to continuously convince you to spend money on stuff you don't actually need. So they use all the psychological tools at their disposal to get you to feel like you need lattes, or manicures, or figurines, or wealth management or a Range Rover or whatever, in order to be happy.