I'm always harping about how people are conned into thinking it's too expensive to eat healthy. Below is an infographic highlighting some facts about eating out versus eating at home. Often, it is much cheaper to cook at home and it's healthier, as well. On the surface, some meals away from home (mainly fast food) can be cheaper on the front end but this usually is not the case. And regardless of the initial cost, we must consider the future cost of the damage done by eating unhealthy processed, high fat, and high calorie foods.
And the idea that eating out is quicker than cooking at home is false. When my children were young - and had short attention spans - I found that I much preferred to stay home and cook a meal myself because of the time and stress involved in going out. By the time we got everyone together, drove to a restaurant, waited in line if it was a weekend, waited for the waiter to come to our table, waited for him/her to return to take our order, waited for the food to be cooked and served, ate the meal, and then waited for our check, I could have cooked a much cheaper and healthier meal and even cleaned up afterwards. And I would have avoided the stress of tired, bored, and cranky children acting up in public.