When one eats berries in a bowl, regardless of the genus of berries being devoured, one is best served when the last berry consumed is of the sweetest nature. Bitter berries are only tolerable when there is at least one more berry of significant sweetness left to cleanse the palate, thus leaving the partaker of berries quite delighted and satisfied.
Hence the majesty and genius of pie...where all fruit is made equal, resting on the dulcitude of fellow berries. All being exalted together by sugar and crust, crust and sugar. Amen and forever.