Nothing lasts forever, so let's talk about your model of how the economy works within your decision horizon.
The BoJ has been printing yen for decades, and the counter-intuitive result is that yen is strong and 30-year interest rates are less than one half of one percent.
Your model predicts imminent catastrophe, yet there is zero evidence that this cannot continue for the foreseeable future.
> you are taking the money from the future
No, we are borrowing from each other in the present. And those lending to Japan apparently think there is an extraordinarily low risk of default over the next 30 years.
> There are well-known hedge funds (check out Kyle Bass) betting against Japan.
And yet the yen is strong and interest rates are low.
When the facts on the ground contradict your mental model of how the world works, maybe it's time to change your model.