Can we really afford this, and will the bank support it?

Edit: The new property would also be a good retirement provision

Financially yes, but no longer suitable for old age. 250m2, pool and so on want to be kept in good condition.

Financially not really either. If the current surplus were largely invested in diversified investments, there would be more to show in the end. Because apart from the work on maintenance, that also costs a lot of money.

Financially not either. If the current surplus were largely invested in diversified investments, it would result in more in the end. Because apart from the work involved in maintenance, it also costs a lot of money accordingly.

Yes, if you actually did it that way.
But in reality (all statistics say this) money that one has left over is consumed.
That is why, on average, retirees who own property are significantly better off than retirees without property (with the same income levels during their working life). Of course, all of this is an average and not considered individually for single households.

What has not yet been answered for me. Why does one want to build even more expensively after such an expensive construction?

What happened, why is there such dissatisfaction?

What has not been answered for me yet. Why would you want to build even more expensively after such an expensive construction?

What happened, why is there such dissatisfaction

I will not address this here - as already mentioned in the first post - but with a little imagination, one can come up with quite a few reasons, can't one?

Yes, if you actually did it that way. But in reality (all statistics say so) money that you have left over is consumed. That is why, on average, retirees with property are significantly better off than retirees without property (with the same income conditions during their working life). Of course, this is all average and not considered individually for single households.

Exactly, then discipline is required. It is true that property is better than having nothing at all. A forced savings rate, so to speak. In this particular case, it is obviously not consumed. Money invested sensibly will yield significantly more returns than the own house.