In so far as there is kamma [good rebound from good deed] these are the things one wants rebounding back to one should there ever come a time when you're down and out, fallen on hard times, hit bottom, or reborn as what you deserve.

Further Resources:
DhammaTalk: Kamma
The Analysis of Kamma: Two Suttas
Sangiti Sutta: Four Ways of Laying in Kamma