Absolutely. Totally normal in the Netherlands. I do this (28 hours). My wife too (32 hours). We've got a kid to raise and a house to look after. We earn more than we need, so why work more hours?
As I believe Deadpool said in the most recent Deadpool and Wolverine movie - ‘The Dutch are never going to the moon, but damn do they know how to live.’
Think I'm starting to see why so many people immigrate to Europe. European labor laws and lifestyles are so reasonable. No wonder American life expectancy is so bad.