Why is murder wrong if Many Worlds Interpretation of Quantum Mechanics is true?

[FlatAssembler]

But... If Quantum Immortality is true... Then euthanised people, just like suiciders, wake up in some paralel world... But with high probability of being paralyzed.

Nonsense. They don't 'wake up' in another world - they have always existed in that other world (precisely the same way that Schrodinger's cat is always alive and always dead). And the probability of them being paralyzed is exactly the same as them not being paralyzed.

You continue to convince me that you don't understand QI at all.

Boru

To me it seems like you do not understand Quantum Immortality. While a person is being euthanised, countless new worlds are being created. In the vast majority of those new worlds, that person is dead because euthanasia succeeded. In some of those new worlds, however, euthanasia has not succeeded. The euthanised person will wake up in one of those worlds... probably with a severely damaged brain.