Life is Like a Zombie Movie

Recently, I came to the conclusion that life is very much like a zombie movie.  Life is out to get you.
You're alive and you keep moving to keep it that way.  Everyone else is in the same situation as you and you're all working together.  There's always someone that will risk everything they have to keep the group alive and there's always someone who is only with the group for their own advantage.  So, everyone you're with can be trusted, to an extent.  We have to weed through those who we can rely on and those who we need to stay weary of.  All the while, life is chasing after you in order to feed off you.
Sure, zombies usually are slow moving and you can run away from them (except of course the crazy mutant variety).  They, like life, are always waiting for you around the corner.  Sure, you can bunker down and try to keep your situation safe but eventually you'll have to make some kind of gamble or eventually your defenses will get broken down. That's always when it's the most dangerous too.  When you think you're safe and you get complacent, that's when the defenses get smashed and you're on the run again.
The worst part of it all is that the whole time you know in the back of your head: Life (like zombies) will eventually kill you.
This isn't all that bad, actually. For starters, everyone dies eventually, obviously.  But also, like Duke Leto Atreides told his son Paul in Frank Herbert's Dune, 'The first step in avoiding a trap, is knowing of it.'  In this context, once the realization, that life is a tough and messed up thing, is achieved it becomes more manageable or at least slightly more navigable.  Everyone is in the same position of keeping their life going.  We're all exhausted and tired but we still fight on.  Because once we see that the world isn't what it used to be before the zombie apocalypse (or in real life once people have to start being more independent and support themselves or someone else) we get a better sense of what we're dealing with and how to move forward.  Just like in a zombie movie, you can't give up and you have to keep going.  So, be like the survivors.  Just because it looks (and for them it literally is) like the end of the world, it doesn't mean there isn't hope.