How does it work?

The mind of parents is like an unsolved mystery. Story of the day: The compromise of a sleepover. Admittedly, it was a really fun boy-girl sleepover even though there was a lack of people. But see the thing was, I got there around 9pm, slept over, then had to be picked up the next morning. My parents wanted me to do my homework, which, I agree since I have quite a lot to do. Here’s the catch; my family and I went for lunch, and then went Grocery shopping! By the time I got home, I have 2 hours until I have to go to church and meet my friends there again! I could’ve stayed with the gang, ate lunch and see a movie during that time! Then my parents could’ve picked me up! How does that work?