Agreed. I walked past a high-end fashion store in a major European city recently. The big glass door was locked, with a sign explaining that the shop was open, the door was locked to prevent theft. There was one young woman inside staffing the shop, sitting behind a counter. I envied her, I could happily take minimum wage for a year or so, sitting at a desk all day with very occasional interruption, while I tap at a laptop working on personal projects. Unfortunately I'm not a glamorous 20-something European woman.
That's what I did. Hobbies & Side work. Traveling!
The key is to set boundaries, learn which 5 hours of work are important and manage expectations well. Im convinced you get most of your work done in the first 20 hours of the week and there's diminishing returns after that. Manual labor scales pretty linearly with time. Software development not so much.