because Americans think that whatever their culture is should be the culture of other countries as well, due to ignorance and arrogance.
Americans own dogs and love animals more than even other human beings. They will support gun ownership to the death and refuse to pay for healthcare for other citizens, but eating dogs oh no that’s too barbaric! How dare people eat dogs when we can eat chicken and cow and pigs! One is man’s best friend after all! The other animals are only holy in other religions like Hindu or Islam but who cares the only important religion is Christianity am I right? God told us we shall not eat dogs! Or did he… ?
Oh what about the whole age of consent BS? In America the age of consent is 18, which means that anyone older than 18 having sex with anyone under 18, is a pedophile. However in other countries the age of consent is not the same. Americans think it is however because they think their laws apply equally to other countries, so if they see a Chinese person or Japanese person in a relationship with a 17 year old, they are all pedophiles! Of course – because there’s such a big difference biologically between 17 and 18 right?
You can tell my answer is dripping with sarcasm, btw.