Having children has increased by humility.
My 4 1/2 year old daughter can beat me fair and square in a game of I SPY, and not just beat me but cream me, 20 to 4. Her uncle, no dummy, gave her the game at our early Christmas celebration and she beat him at it. She has played her siblings and usually wins.
The power of her memory at such a young age astounds me. Little children are truly remarkable. She has a far better memory than I do.