-At the expense of dead parents
Where on earth did you read that? Before dropping such a bombshell, one should rather read more carefully.
: Basically, I partly see it the same way as you. There is a bit of a tendency here to always assume the worst right away. Around us, there are also people who have bought/built houses where no one knows how they want to finance them. Whether that will really work out, will probably only be seen in years to decades. And if a separation/divorce comes in between, it usually doesn’t matter anyway, because one person alone is almost never able to easily shoulder such sums on the spot.
In my opinion, the total amount is simply a bit too high for you, but since you’ve already signed the contract, you must surely already have an assessment from the bank about the maximum sustainable monthly burden?