Must My Kids Play with Your Kids, Just Cause?

I want my kids to learn that if they want someone’s time and attention, they need to earn. It’s not owed to them. Even as their parent I don’t believe I owe them time and attention. I choose, happily, to give it. Most of the time. Some of the time they’re super annoying and I walk away. When they get upset, I tell them openly and honestly how I’m feeling and why I’m leaving. I don’t shame them. That’s stupid, too. But I don’t hide the fact that I’m feeling annoyed by their behavior, and if they want me to stay, they should take a breather and consider changing it.