It's like a Tontine. The losers aren't around to be unhappy, and those that didn't lose are happy because they suffered far less. To some degree killing 10% is

It's like a Tontine. The losers aren't around to be unhappy, and those that didn't lose are happy because they suffered far less. To some degree killing 10% is the optimal strategy but only for emotionless androids. Are people getting unhappy because their relatives died though?