Must good and evil, right and wrong, beauty and ugliness be clearly distinguished?

There is no need to distinguish between good and evil, right and wrong, beauty and ugliness. Besides, there is no way to distinguish clearly, because there is no uniform standard for different people, even different species, good and evil, right and wrong, beauty and ugliness.

For example, in the eyes of some people, being thin is beautiful, and they try their best to lose weight all day. In the eyes of some people, chubby bodies are beautiful, and they try their best to gain weight.

Some people believe in Buddhism, buy fish and rabbits from fishermen and hunters and set them back in rivers and mountains, thinking that they are doing good deeds. They didn't expect that the fish in their house would eat a lot of live shrimp, worms and so on. Rabbits also eat a lot of grass. For shrimp, insects and grass, their release is not a good deed, but a bad deed.

To sum up: good and evil are indistinguishable from right and wrong. So you don't have to distinguish between good and evil, right and wrong, beautiful and ugly?