Parents like to care for their children, naturally. So what if an adventurer's parents come to visit for the weekend?
"You're doing what? Going to fight a dragon? Oh, no you're not - you could get killed! You're going to sit right here while I make some cookies and run you a nice warm bath!"
Luke: Princess hates you, you know.
Luke: No idea why, you've been such a wonderful father to her.
Darth Vader: You are very much mistaken.
Luke: You've done nothing but try to control her.
Darth Vader: As any caring parent.
Luke: That's not what I meant!
Darth Vader: I shall protect her from murderous riff-raff. Like you.
Luke: Hey, is that black helmet made of a pot or a kettle?