Stop to eat fast food!

Dear Juri,
As you know, your father, your brother, and I are going to visit your grandparents in Estonia for five weeks. I am writing this letter to you because you'll be staying at home alone while we are away. Of course, you are 17 years old, and you are quite adult already. I don't worry about payments of bills on time and your ability to wake up in the mornings at 5:00 a.m. However, there is one problem that I am very worried about. I know you don't like to cook. So, you probably will eat in fast-food restaurants like you did last time when you lived alone for five months. I hope this time I can convince you to prepare food for yourself at home, because home-made food is much better for you.
In our busy days, many people don't have time to prepare food at home. They often hurry to work, to school, to shop, or somewhere else, and instead of eating at home, they buy burgers, sandwiches, and French-fries in fast-food restaurants. Of course, I realize that fast-food is very...