There are so many healthy and tasty meals that an be made with 5 minutes of prep time (longer cooking time sure, but 5 minutes spent in the kitchen). It is also easy enough to make a healthy sandwich if you later need to eat on the go. It is more a matter of good health rather than money, but you will save money buying your own locally grown organic food. Also re: organic food: try doing a taste test of locally grown organic veggies vs. vegetables from a supermarket that were likely trucked in from a long distance from where you live.
My wife and I do eat out, but only for social reasons.