Tragic as this scenario truly is, it should be remembered that for some people this is not just a "scenario." There are those who have actually lived through situations such as this and they've had to make equally difficult decisions in the process. The Holocaust comes to mind immediately. But there are lots of other such situations from more recent years. We are so fortunate to live within affluent, pluralist, egalitarian, democratic societies, where it is unlikely we will ever be confronted with a dilemma such as this, other than in the abstract.
My initial response to this scenario was, "Yep, sure, I'd do it. After all, the baby's dead either way." It wasn't a difficult question to answer for me initially, in the abstract. I'm a gay male who has never had much contact with, nor empathy for babies. Easy-peasy, I thought. I just saved all those lives, mine included!
And then something strange happened in the hours after I'd participated in the exercise. To start with, I couldn't get it out of my mind. Then I started to have empathetic feelings for the baby (a first for me). I could feel the warmth of its body in my hands as I smothered it and could feel the child's heart cease beating as I snuffed out its life. I tried to rationalize my decision/actions. I imagined the baby was female, not male. I imagined that the baby was very ugly or even disfigured. My imagination was obviously in hyperdrive and trying to make me feel better about killing a baby who I rationalized would never grow-up to be desirable or worthwhile (my shallow, mercenary reasoning even shocked myself). All this seemed to be emerging from deep within my subconscious, without "me" giving it any conscious consideration (is this making any sense?).
My initial, cavalier decision came back to bite me big time. It was a decision I initially made with ready ease, thinking it was what was best for the group. What came afterwards was guilt, shame, doubt and self-loathing.
This is too hard for me! I'm off to bed!