What we like to eat changes over time. As we age, we realize that even though something tastes bitter or sour, it won't kill us, and we learn to enjoy it. When we're older, we lose some of our olfactory sensitivity—we can't smell as well. Humans need smell to experience flavor, which is different than taste (minty, for example, is a flavor but not a taste). We also lose taste buds with age. With our senses diminished, we'll probably begin adding sugar and salt to our food, to heighten the flavor. In fact, there's a theory that the reason many especially "big"-tasting wines in recent years have won awards is that wine critics are getting older and finding subtle flavors harder to sense.