Is buying a house sensible in the current market situation?!

Repayment modification options, thanks for the tip! There would still be additional costs...

Time issue,
many have already paid the same rent amount in DM, 20 years ago,
a doubling of the current rent in 20 years is not unrealistic.
The rate is constant, the asset difference at the end of the term is 1 house, with appreciation 2 houses

yes that can be correct, but I am paying tens of thousands of euros for the bank loan and honestly: I don’t see any increase in value. The prices for "normal" houses can’t go any higher.
We looked at a terraced house a few weeks ago: not our preferred location, but okay. Living area 125 sqm, 155 sqm plot, built 1970, 400TE (plus additional costs plus at least 100TE renovation) Sorry, but that is crazy!
And the worst part is, it is selling.

you pay little for the loan, going from 6-8% to today it hardly gets any lower. But if you can't sleep peacefully, then forget it. Well-paid people also live in [Plattenbau] because they want to, and your rental apartment is good and can only get more expensive, right. But the increases in property value are simply a fact.

you pay little for the loan, on the way from 6-8% to today it can hardly go any lower. But if you can't sleep peacefully, just leave it. Even in the prefabricated buildings high earners live because they want to, and your rental apartment is good and can only get more expensive, right. But the increase in property values is a fact

what do you mean by "on the way from 6-8% to today"?

1995 interest rate subsidized 5.8%, market rate 7-8%

yes, that can be correct, but I do pay tens of thousands of euros for the bank loan

... and much more than the interest, you pay rent to the landlord. Money is practically given for free. Rental housing is not. And it is also a fact that homeowners are better off in old age than tenants (although they have - necessary? - bought flexibility at a high price). Even if there is no increase in value, it doesn't matter. Because as a retiree you live in the worst case in a property that is worth nothing anymore, whereas friends for example still pay high rent. As a homeowner, you can only gain.