NO GOOD DEED GOES UNPUNISHED

There is an old saying that no good deed goes unpunished.
How can this be?
Karmic law says that for every action there is an equal reaction. Certainly there must be some error in this old saying. I ponder, for somewhere lies a hidden meaning, and I aim to shed light on it.
No matter how selfless one's good deed may be, one expects gratitude. When gratitude is not forthcoming, or does not live up to expectations, disappointment sets in, feelings get hurt. Sometimes, a good deed gone unthanked can lead to resentment, and loss of friendship. While it takes but a moment to do a good deed, feelings of resentment and anger can linger indefinitely.
No good deed goes unpunished. It is our expectatiions that make this so.