Answer:
because without distinguishing between black and white in some categories we would never know what is right or wrong. As humans we have a mind that tells us that unethical means bad and ethical means good.
Step-by-step explanation:
For example without distinguishing unethical and ethical we would never have laws in the first place for the countries we live in. Because something that is unethical means something that is bad or morally wrong, so if we didn't distinguish murder as unethical it would still be in the grey area between bad(black) and white(good). That's why it's important to distinguish actions as unethical or ethical because without that the world would be even more full of what ifs and things like murder, assault, and sexual assault would be up in the air as well is bad or not?