A society that despairs looks (in the wrong direction) upon ways to ameliorate despair. It sees suffering, but it is not at all redemptive, because without God, little can explain the point of it all.
Despair is the opposite of the theological virtue of Hope. When we despair, we reject the expectation and desire to receive God’s eternal love. It then appears to be a mercy (for the euthanizer, not the euthanized) to think that when our despair is combined with extreme suffering, someone will just turn the switch to “off” for us and make it go away.
Pray for those who despair.