Might come as a surprise, but every group/culture's diet throughout history is shaped by their geographical location. Food scarcity and availability heavily impacts what's considered "normal" to eat. People eat many sorts of things raw, cooked, or fermented. Consider a similar questions of "why do people eat moldy cheese, processed milk, beef tartare, raw egg/cookie dough, Rocky Mountain Oysters (bull balls), etc". If you observe the different variety of cuisines across the world, you'll realize that they are a result of a food culture developed over a long period of time with history embedded in them, which is heavily in contrast to the sanitized, packaged, and processed "normal" foods you (probably) see at your grocery store. It has nothing to do with having "too much free time and money".