I think many people (like me, for example) see the house as retirement provision – so of course you want to make sure to pay it off quickly. But fundamentally, especially with the current interest rate, it is not stupid to have a 1% repayment. After 20 years, you usually need a different house than when you were young with children. Therefore, build something solid that you can easily get rid of, and then in 20 years either the same again or back to an apartment. The only problem is if in 20 years the real estate market is at rock bottom and interest rates are very high...