Why can you not eat the skin of Sharon fruit?

Sharon fruit, also known as persimmon, has a skin that can be tough and astringent, especially in unripe varieties. Eating the skin may lead to an unpleasant mouthfeel and a bitter taste due to the presence of tannins. Additionally, the skin may not be as palatable as the flesh, which is sweet and creamy when ripe. Therefore, it is often recommended to peel the fruit before consuming it.