There is too much going on for Us Rhinos as We go from day to day. That is the main reason We don’t hold Grudges. They’re too demanding. Grudges need lots of attention.
Sensible Rhinos don’t want the bother. Resentment leaves a sour taste in the mouth. And nothing changes for the better.
Besides, in time, the Grudge will inevitably grow if We water it. Then We find We are not holding the Grudge; it is holding Us.