It's all about moderation. Working hard and playing hard. But not letting it take control of your life.

Agreed.

In other words, being a mature adult.

Not many of those in ESL, in China.

I hate those who hate fun and those who let too much fun get in the way of responsibilities, equally.

And ne'er the twain shall meet eh? I don't hate fun either, but responsibilities? Not for me, no wife, no kids......