Earlier quoted context omitted.
I'd prefer to live in a country with low GDP growth and have an enjoyable life than kill myself with work.
But your great grandchildren (if any) will prefer that you had different preferences.
Switzerland, Sweden, Norway, and Australia have very high quality-of-life (according to the Economist Intelligence Unit) and very high per-capita GDP[1]. Note that Switzerland's and Australia's GDP per capita are more than double Japan's. Sweden's is close to double.
Second, my grandchildren will be able to move to any country they want. If they prefer a soul-crushing job, they can easily find one.
1. https://trulysingapore.files.wordpress.com/2013/05/per-capit...