Africans have enlarged noses due to genetic inheritance, and the entire African people have flat noses. So in their eyes, a flat nose is the most beautiful. Of course, limited to their aesthetics. As for why Africans are like that. This question is actually like why Asians have yellow skin regardless of whether they are fat or thin. There have been various races a long time ago, so each race also has its own unique signs. For example, Africans are very dark. Americans are very white and stuff like that.