I would suggest to them that if they believed in God and his wisdom then the reason I and them were left alive was because God decided that the earth needed to be cleaned and re-populated, like with Noah. And as a believer it is their duty to re-populate the planet they have been blessed with. God has seen fit to select me to survive and father his children through them, so no matter what happens letting me smash the crap out of them is the best thing to do