Pain is weird. It's extremely subjective, not only between people but also within your own body. Paraphrasing something Paul Rozin mentioned in a paper on so-called benign masochism: people can learn to enjoy eating the most extremely spicy food, but even those people will still scream out in pain you rub the ghost pepper they're eating in their eyes. Pain sensation is therefore localized and contextual.

So we should not be too quick to dismiss the pain of others.

As far as 10/10 pain goes, I've heard cluster headaches can get so bad it has driven people to suicide during an episode.