Maybe, but not remembering the exact amount of pain that it caused you may lead you to think that you can deal with it if it happens again and commit the same error because the only other option you have is something that would also cause you pain.

Like having to choose between falling into almost friezed water or into fire, you remember that the fire burned you and caused you pain, but not how much pain it caused. So you choose that, because the water is cold and would hurt too and you could down, you think you can handle the fire, but at the end you should have chosen the water because that pain wasn't as bad as what fire did to you.