Assumptions can kill you.

A couple in South Carolina arranged to buy a car off Craigslist and went to meet the seller at a gas station. turned out the seller was a armed robber. He pulled a gun on the couple. He kept his attention on the guy. They guy's girlfriend drew her weapon and shot him dead.

False assumptions will kill you. As Bob noted, "the fastest growing segments of gun ownership are young, urban and female."

H/T to Bob.