morality is subjective and people don't have free will

[Angrboda]

Our morality appears to be a mix of subconscious drives with an icing of cultural framing on top. If there ever evolved a politics to where living at the expense of the young was considered wrong, we might open up additional options for self termination. But the subconscious part of morality seems rather inflexible, so I think we'd still have issues with killing. But then, countries are able to rationalize killing rape victims and honor killings, so I suppose it's possible. Given our society's lackluster response to the global warming crisis though, I find the prospect of voluntary change at the societal level unlikely.