There are millions and millions of people out there in their 20s and 30s who work part time and do whatever they want with the other time, because that provides "enough" money for the life they want to live.
I personally work roughly 50% time. I work a few years, then a quit and do whatever I want for a few years. Right now I'm driving around Africa, have not gone to work since mid-2015, it's fantastic.
My brother just built a house and had his first child with his wife. He works 4 days a week, looking to get down to 3. When his wife goes back to work she will work 3, maybe only two. They don't have a lot of money, but they have "enough" for the life they want and they spend a lot of time surfing, walking on the beach etc. They're both early 30s.