Avoiding suffering takes more effort than suffering itself.

Feeling is the language of the soul. That is how our differentiation between good and bad functions. We just know. We just feel something isn't right or if we know what we're doing is right, we just know it.
Yet, some people try to avoid the feeling or regret or hurt. How that can be done, is quite a mystery. Everybody makes mistakes. Thats what makes us human.
We need to go through a certain feeling to know what it is really like and grow with that experience. If we don't permit ourselves to feel too great or too bad, it will contribute to the self-esteem in the wrong way. Each suffering and each pain comes from something about life. They teach us about what we could have done, what we are capable of doing and what we could not have done. With each experience we grow, so that the next time, we're better equipped.
But if we avoid feeling bad about something we do, we'll never try to correct it and hence we'll never improve.
Its easier to feel bad and decide to improve than to stop from feeling bad. Because then we're conscious of what not to feel bad about, giving ourselves constant explanation and excuse not to feel bad.
But learn we must. To help, to love and to grow. If we give up on people because of only a few bad people, the good people will never get a chance to be judged. You can't avoid feeling bad, but we must accept it quick and learn from it and move over it fast. Don't forget to feel all feelings, but keep moving on.