My grandfather was a doctor and lived a modest life. But he worked all his life. In his 70s he was still volunteering at a local hospice. In fact on his 78th birthday, he went to work in the morning, then attended his birthday party, then had a stroke and died a few weeks later. He never

> swam with whales, explored dense Amazonian jungles, climbed snowy mountains, explored the countless alleys and backstreets of Tokyo, etc.

But I think he enjoyed his life just as it was.