Here is the second question:

If the world became full of monsters(mutant animals, zombies, etc.), insanity, murderers/robbers, Evil and good robots, and a survival-of-the-fittest setting, what would your melee weapon, ranged weapon, and last resort weapon be? Why (You don't have to answer why if there is no particular reason)?

(As the rules go, please put you answers in the comments)