So, I'm not running out of arguments.
It is and remains a bad financing that is just begging to fail
Personally, I don't see it that drastically. The loan amount isn't high enough for that, but the conditions are really bad, of course. From an interest perspective, it doesn't really make a difference whether you finance now or in 2 years when interest rates might be a bit higher. By then, you'll have saved significantly more buffer or can contribute more equity to reduce the interest. You have to finance now at 2.8% where others with 20% equity get 1.7%. That way they pay a lower rate, finish earlier, and have much lower total costs than you.
What I do see as critical is the current consumption behavior. When buying a house, consumption behavior is like going 100 km/h into a wall. Everything you had in terms of conveniences suddenly becomes impossible. Depending on the type, you won't be able to just do that, and I’m not just talking about Netflix, the butcher, shopping only at EDKA, etc., but rather about vacation habits & dining out. It no longer means 2-3 weeks in Peru, Canada, Thailand, Maldives, Australia, but for the next 20 years, one week in a holiday home on the German coast or camping, which is already expensive enough in the high season.
And €240 is not chump change. That’s easily half a month’s groceries for a family of four.
Anyone who thinks like that certainly doesn’t know how to handle money.