30 years ago no one even remotely thought about this type of thing no one had anxiety over it because no one thought about this. Every once in a while you might have thou, “gee I wonder what would happen if a meteor hit earth?” Then as quickly as you thought about it you’d forget about it . You would just go in living your life. I’m convinced with the advancement of technology,internet, and all the tv shows & information about space is the cause. Sometimes what you don’t know won’t hurt you.