Is your issue with Belgium (where this is legal, among other developed countries)? Or legal/government sanctioned euthanasia in general? Follow up question: thoughts on jurisdiction shopping for this when citizens can travel there from a country that doesn’t respect their rights domestically (a tale as old as time)?
Belgians can do what they want, I guess. But we can judge empirically whether their social beliefs are pro-adaptive or mal-adaptive. Belgians are being supplanted by Muslim immigrants who definitely do not think suicide is okay. It’s unsurprising that a culture that doesn’t value life for its own sake is being out-competed by one that does.
Those are socially constructed concepts and society decides their metes and bounds.