This is exactly my statement when I told my boss I wanted to work part-time. Now, I only work around 20 up to 32 hours a week. Also, I feel I'm way more productive this way: I only work when I "feel like working". Because of that, I'm way more productive when I work.
I have dreams for my future. Doing a day-to-day office job isn't one of them. In my "spare time", I'm converting my hobby and passion into my own company so I can, hopefully, earn money with my hobby and stop working completely.
Yes, I'm from the Netherlands.