Pain

What is pain? I mean, what is the point? I'm not saying that what the Saints went through is pointless, but really, when you stop to think about it, what is pain? Now, if any of my readers are Doctors, You might say that pain is something that we feel, both emotional and physical. But honestly, can anyone explain to my why we feel pain? Is it to remind us of the world around us? Is it to remind us to go to Doctors appointments? I dunno, but if you can tell me, I'd like to hear it. Bye!