Let me clarify my point. Let's say you just have an every day simple bone fracture (that didn't pierce your skin, so there's no risk of infection). You're almost certainly going to be fine.

Contrast with getting hooked on opioids and entering a downward cycle of addiction -- the potential outcome there is the very loss of your life, with a higher chance than losing your life from a simple bone fracture. A lot of people die from opiate overdose every year in the United States; it's actually a few thousand more than from being murdered with a gun. http://www.cdc.gov/drugoverdose/data/overdose.html

The problem with opiate addiction is that a lot of people are introduced to it through benign means, like starting off with a prescription from their doctor, or their friend giving them some for a legitimate pain-related reason. The gateway drug argument for weed is bunkum, but the gateway drug argument for some opioid use sometimes leading to more opioid use is very real, and is borne out with the statistics. The CDC has lots of information you can read. It's the biggest and deadliest drug epidemic in the US right now.