I've been going to China every year now for more than a decade.

Older fatherhood isn't all bad: testosterone rates drop about 1% per year as men age, making them less reactive and more patient, and a professionally established middle-aged man is likely to have more time and money to devote to his kids than a twenty-something who's just getting started.

To be perfectly honest, I think that as I'm growing older, I'm just growing more impatient. I'll be very happy if at some point people say, 'Michael's grown wiser and softer in his old age.' But we'll have to wait and see what my next project is.