Schadenfreude is not cool. Kids are good, but grandchildren are awesome, mostly because they go home, though it doesn't actually say that. Verse 12: Let a bear robbed of her whelps meet a man, rather than a fool in his folly. Gives one pause about the state of Middle Eastern zoos in the Bronze Age.
Solomon clearly remembers that whole Absalom/Amnon conflict quite vivedly in verse 17: A friend loveth at all times, and a brother is born for adversity. Also, it turns out that even then they knew depression isn't good for you, because verse 22 reads: A merry heart doeth good like a medicine: but a broken spirit drieth the bones. No punishing the just.
And finally, one of the wisest things ever said, something I wish my students would practice daily is verse 28: Even a fool, when he holdeth his peace, is counted wise: and he that shutteth his lips is esteemed a man of understanding. or as you're more likely to hear today, 'Better to remain silent and be thought a fool than to open your mouth and prove it.'