On "passive killing"

[This was a response to a comment where someone questioned a hero's motive to leave a villain to die, and not saving them.]

Choosing not to help someone isn't the same as killing them.
Leaving someone to their own devices is not the same as ending them.
Walking away isn't the same as murder.

Thousands of people are killed worldwide at this very moment, and yet we (you, me, cousin Tom and Lisa next door) are not doing anything about it, are we killing them? Is that the same as killing them? Sure we can't help all of them, but we could choose to even help just one, yet we aren't even trying to find out who we can help; whose death could we prevent if instead of watching youtube videos we went out and saved someone. For whatever reason we are making a choice not to, and that doesn't make us killers. We just deem it's not worth the trouble, not worth sacrificing ourselves, not worth our time nor our comfort.

We aren't even trying (giving money to charity is just a way of bribing one's own guilt)

I know this is a shitty thing to say, but it still doesn't change the fact that we aren't trying everything we can - and that is something we have to come to terms within ourselves. Everything in life is a trade off, with what choices are you willing to live with? Is someone else's time more important to you than your own?
These are the questions everyone should be asking themselves.

So if a hero or anyone else has a moral stance of not killing, it isn't an obligation to save everyone.