I had to think about this for a while.
So much depends on circumstances/atmosphere/scenario
And in the end, yes I agree with Selco. My will to survive is
stronger than my instinct to help another.
It is a good thing to have a solid philosophy/belief system you have examined
already so you can cope/handle with any guilt you might feel, no matter how
brief, over a future choice not to aid another.
Just my 2 cents