To forget is to blithely toss aside the hard lessons that were hard won by others before us, thereby needlessly dooming us to endure the hard lessons that are likely to be forgotten by those who will follow us. And it is altogether reasonable that in order to avoid this repetitive trouncing, God graciously granted us memories.
. . .the sorrows of the heart yearn
to be erased, for one final atonement
finite and forgetting and whole - but time in its preserving
will not permit forgetting; destroying
only when we can no longer beg
or argue with time
to preserve the brief benisons
a few moments longer than our sins