Related:

• There's no point in being grown up if you can't be childish sometimes. -- Dr. Who
• There's no point in being grown up if you can't be childish--sometimes. -- Dr. Tom Baker, ROBOT
• What's the good of being grown-up if you can't be childish?
• Lisa: Dad, can you take me to Dr. Hibbert's office?
  Homer: Why? What's wrong? Lisa: Oh, nothing. I just scheduled a tetanus booster....
• Sometimes there's no point in giving up. -- Louis Wu "The Ringworld Enginee
• You maybe only young once - but you can be childish all your life.
• Bart: Dr. Wolfe likes to pull kids' teeth so he can sell 'em.
  Kid: To who? Bart: Know that rattle when you shake up a can of spray paint?...