That's sad.
Merely stating an opinion doesn't count as substantive. There needs to be something to interest the reader.
(this is me practicing nonviolent communication or something :)
(to be clear, I don't feel offended by the parent comment)
Citation needed.
Here's one example of a situation where I could very easily see someone regretting not spending more time at work.
As a professional creative, I'm betting there are a fair number of authors, film directors, screenwriters and so on who died regretting they didn't finish their latest work, or didn't spend more time on the thing they really wanted to make. That's work.