The foods we eat are simply horrible. However, the food isn't the problem, it's the lifestyle. When you're always on the go how can you avoid fast food or the microwave? It's easy to say, we should be eating healthy; it's difficult to change your lifestyle to allow healthy eating.
It's not just that. Eating healthy is expensive. I do what I can to take care of myself, but in the end I'm going to buy the $2.50 slice of pizza for lunch rather than the $7 salad.