Dog meat consumption is a centuries-old practice on the Korean Peninsula and has long been viewed as a source of stamina on hot summer days. It's neither explicitly banned nor legalized in South Korea, but more and more people want it prohibited. There's increasing public awareness of animal rights and worries about South Korea’s international image.
People just have different tolerance for how much death is caused by their own existence, your gonna kill something regardless to survive, that is life. I am not really to judge, especially a culture that I have very little interaction with.
Thank goodness for these "animal lovers" that are okay with killing and eating more than 10 land animals per year + god knows how many sea creatures. But hey, they bought some incestuous pure breed dog from a breeder for thousands of euros so they can pretend they care.