Does evil exist?

[°Leprechaun]

Unless one believes in moral relativism, evil does exist, of course.

Here is a book that I own, which calls evil a "puzzle" rather than a "problem".
The problem goes away if you don't believe in an all loving all powerful god.

https://www.amazon.com/Puzzle-Evil-Peter-Vardy/dp/0765601672#reader_0765601672

He's written some other interesting books as well.

Evil is like pornography, I can't define it, but I know it when I see it.

[°Leprechaun]

Evil exists, but rather than defining it in terms of good, I prefer to define it as suffering, so an evil act is one that creates or enhances suffering. Then I define good in terms of evil: good is the reduction of evil, hence it is the reduction of suffering.

Life is suffering. The Road Less Traveled begins with the words "Life is difficult":

https://en.wikipedia.org/wiki/M._Scott_Peck#Theories