Making offerings to ancestors is an important way to continue remembering our ancestors, paying respect to them and a way to cultivate good Chinese virtues, especially Filial Piety. It is also a good way to preserve our Chinese culture. Although one can argue remember our ancestors should be by heart. However, such rituals and practices have been past down from our great ancestors thousand years ago, and should have its relevance and must be respected. Just like we should respect some religion for refraining to consume certain food.