Aside from the "humble" bragging going on here as usual, preparing one's own meals from stock is generally much better on the bank account. Personally, I like to cook once every few days and make a big meal I can eat over the course of the next few days. Some of the biggest meals even last a week or more!
Home-cooking isn't very hard and should be much healthier than most other kinds of meals. All that I typically use is a large frying pan and a knife & cutting board which everyone should have in their own kitchens. I also recommend a rice cooker, as they're usually not very expensive and provide a very cost and storage effective food source. Rice is nutritious and works with many different meals, and in a rice cooker it is mindlessly simple to make.