8.5 years later... My children are now 7 and 5. A challenging time, but we are still all together :)
Of the 363K loan, 135K is still left, about 55K interest so far. I originally wanted to be done in about 10 years, but since I currently earn more interest on the TG account than I would have to pay, I will use the full 15 years.
To all planners who want to go back to work full-time right after birth: my quite ambitious wife took a total of 3 years parental leave and still works "only" 14 hours per week. And that’s our maximum, since we want to pick the kids up from kindergarten or school and help shape their daily routine.
And another experience: life with children is not only colorful and unpredictable but also really expensive. Child benefit certainly cannot cover the costs. Not to mention the loss of income.
Amazing what you can invest in such an old house. And it still remains old... And I’m not done everywhere yet. On average, 15K per year goes into renovation. That I work in the building materials trade is still a blessing.
In terms of value, our place is absolutely not profitable. I will certainly put in significantly more money than I could ever get out, even if there is a 30-year building boom. Well, I also don't pay rent for that. But that didn’t matter to me anyway, I wanted a nice home for the family.