Yeah, I definitely relate, Ashley. I freak out about death and stuff, as well, ... currently having a really crappy night about something health anxiety thing; I'm just trying to keep my mind busy by speaking/typing my second-language, perusing these forums, and other places online. (stupidly looked on Google for something, but it was important) You're not alone.

In a sick sort of way, I'm glad I'm not the only one that's sacred of these things. Granted, my main focus isn't world-destroying asteroids. Phenomenally rare, by the way; unlikely to happen for many years - just think, we've been around for a long time and the world hasn't been hit by a planet-destroying asteroid, so that's something!