Just wanted to make the additional point, that in my personal experience as well , the situations which have broken the worst are the ones which have taught me the most, given me strength and contributed the most to who I am. Even if that is something which some other people dislike, so be it. I wouldn't want to change it, even with the occasional bit of tender scar tissue.
Extramedium, I think your last question reflects how egocentric our species is ( this isn't a personal criticism or even a criticism of your post). We are the infinitesimally small part of something infinitesimally large. IN the blink of an eye, everything we know will be gone, along with our species. Saying that a meteor would collide with earth because of a human cause is more ill informed than a fly who thinks the dinner table has been set so he can banquet.

In my opinion, anyhow.
What's wrong with being deluded, anyhow? Attributing false reasons to events, in the least, gives us a sense of control that we couldn't otherwise experience.