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.
...first, in order to remember, something must be forgotten; second, the place where memories are stored has no boundaries. In other words, forgetting is a twin; its tandem effect is best called "simultancous" distraction, the instant when one memory defoliates another. This fuzzy double - one devouring the other - presumably inhibits learning