That also means that home builders with relatively limited financial means are supposed to choose the most expensive financing option.
Yes, of course it means that!
It's somewhat amusing to follow this here... most people report what they believe to be right from their own perspective. And in most cases, I hope, that will also be the case. But the perspective is always different.
Again... if, as of today, I take on a rate of 20% of the household net income, maybe have finished planning children and the partner is already working again, meaning in terms of life phases rather more income than less is expected in the future... well then I can easily say I'll just do 10 years because I prepay 5% extra every year and if after 10 years a considerable residual debt remains, I can still afford it because the follow-up rate + higher interest might still easily fit into the net income. Then it’s just a personal decision whether one believes that the interest rate after the fixed rate period is significantly higher or not. You can also calculate that yourself if you understand a bit about it and use the financing calculators on the internet. For every financing constellation there is a threshold interest rate above which the shorter term is cheaper. There are no general statements here either because it depends on many factors (amount of repayment, terms, etc.) For many, that is around 4-5%.
But if my rate is 35% or 40% of my net income. I still have child planning ahead of me... then it’s not a question of "which bet do I take," then anything other than a financing with as little risk as possible is nothing but reckless. What if, after 10 years in this case, the interest rate actually increased by a few percent and coincides exactly with the time when one partner is at home because of the children? Then the house has to be sold...
In the end, it is also a question of attitude and personality type. Even if you can afford it, that doesn’t necessarily mean you want to do it. Some simply prefer not to worry and to know what’s coming.
Thinking from the other side... shouldn’t every German who can "afford" it own stocks in the long term... but the share of Germans owning stocks is not very high...