So why do people have dimples? Dimples could be a leftover of our evolution. Few ideas around that, one says dimples relates to the face of young children and babies, evolved to appeal to adult humans, the same appeal of why we find them cute (or really ugly). Babies are made to be cute, after centuries of evolution, so they have big eyes, chubby cheeks and dimples, all so we will actually bother to keep them around. These dimples make us more willing to nurture them and make us feel good about seeing a dimpled face. Another idea is that it helps human to communicate with facial expressions. Dimples might make every expression we make, be it sadness, anger, etc. to look much more noticeable and at the right intensity. So people with a dimpled smile look more attractive since it makes their smile stands out. Nowadays it’s just an evolutionary advantage to look more sexually attractive, arguably. But yeah, you are more likely to find people with dimples to be more handsome and pleasing to the eyes. With that said, dimples are really just an evolutionary advantage to making people look more attractive and our emotion more obvious.