Lifestyle part-time? Why not?

Since I'll have to look for a new job soon, I'm currently asking myself a lot of questions about what my professional future could look like. After our favorite chancellor's "part-time lifestyle" tirade, I seriously asked myself the question: Yes, why not? My situation is a picture book of boring r/financial people: 38M, software developer, working for 11 years, investing for 10 years (previously paid off student debt). So far my situation was: Income: ~3300€ N