Because you make it the way you like it, which is different from the way your mother makes it, different from the way your neighbor makes it, etc. Even with the

Because you make it the way you like it, which is different from the way your mother makes it, different from the way your neighbor makes it, etc. Even with the same recipe and ingredients: a different brand of dried peppers, a slightly larger amount of tomatoes, less water in which you boil the pasta, etc. can be enough to change the taste. Small differences can be decisive in chemistry. On the other hand, they make it in such a way that the average consumer will consider it reasonable, which means that many people will rate it 'meh'. Convenience trumps taste and it's considered 'good enough'. It's impossible for a mass manufacturer to make stuff so that you like it as much as you like your own (or your familie' designated cook's) food.