5. You're going to die if you're not near a doctor and you're impaled by something
No! Don’t do it, Joel! Don’t pull that thingy out of your stomach! Don't d--oh, you did it. Ah, man, you’re so dead. Unfortunately for The Last of Us' Joel and every other punctured video game character (again, we're going to have to reference Tomb Raider's shoddy science here--Lara gets run through with rebar some twelve seconds into the game), if you get impaled by almost anything it’s probably game over for you. And irrespective of whether you’re of the “pull it out” or “leave it in” camp, unless you’re in a sterile environment with a doctor, both decisions are poor ones.
The two main issues: exit nicks and tetanus. If the projectile hasn’t hit a major artery upon entry, even if you’re incredibly careful, you’ll likely hit something new and bad on the way out. Heck, that’s one of the main beauties of the design of the arrowhead (and porcupine quills, cactus needles, and bee/wasp/scorpion stingers). Plus, if a doc isn’t on hand with a way to flush the wound as soon as the pokey thing is taken out, then you’ll more than likely get tetanus. It doesn’t just come from rusty metal, and if you’ve ever seen the symptoms you’ll thank you moms for taking you to get that awful shot every school year.