I've cracked my knuckles for most of my life, all three joints in every finger. (yes, thumbs included)
Now that I'm pushing 30 years old, my joints constantly ache on cold days, and my grip isn't as strong as it used to be. At times I absolutely HAVE to pop them to make my hands feel better.
My knuckles are rather large, and now at times they swell to the point where I can't take off my typical size 13 ring.
My family has a history of arthritis, and large knuckles, so A and B may not necessarily be due to C, but I do wish I'd never began that habit.
Out of curiosity, does anyone else here pop their hips?