You left just when you were becoming interesting.
5 seconds sound clip from the Indiana Jones and the Last Crusade movie soundboard.
You can hear this line at 01:14:55 in the Blu-ray version of the movie.
Quote context
[...]
- It was just the two of us, Dad. It was a lonely way to grow up. For you, too.
- If you'd been an ordinary, average father, like the other guys' dads, you'd have understood that.
- You left just when you were becoming interesting.
- Very well. I'm here now. What do you want to talk about?
- Well, I... I can't think of anything.
- Then what are you complaining about?
- When we get to Alexandretta, we will face three challenges.
[...]