Why are genetically modified foods important?
The first one is that they can be easily grown anywhere. This is an important thing because it can be the solution to the agricultural problems in some countries where the climate is hostile and there isn't the possibility to grow plants.
Another advantage is that genetically modified plants resist adverse weather conditions better than other plants and the amount of food produced is higher. For genetically modified animals, the advantage is that they tend to develop less diseases.
But be careful, GMOs don't only have positive aspects!