My 6 year old twins like to come up with questions about whether you would rather die or have X happen. Recently, one asked, "I know the answer is obvious" and then asked me if I'd rather die or have a bunch of dogs die. And I was like, "I'd rather live and let the dogs die" and she and her sister were appalled. They were like, "obviously you die and save the dogs".
Hmm. It's reasonable to assume one human could save more than "a bunch of" dogs' lives by dedicating their post-decision life to doing so. I wonder what they'd think about this as a reason to save your own life.