Sacrifice, or giving up a desired object, in itself is not important in Buddhism. Buddhists make offerings and give to the poor, but not out of the conviction that sacrifice is important to spiritual well-being. Giving things up is important in Buddhism because it reminds us that desire and aversion are the source of suffering. We think that not having something we desire is what makes us unhappy, but really it is the desire itself that makes us unhappy. Being attached to some things and abhorring others is the source of suffering so making sacrifices reminds us true happiness can’t be found by getting what we want.