Why do we hurt? Why are people forced to feel pain?
Physical pain, by animal nature (because YES humans ARE animals) is felt to warn the body of danger and alarm the body's defenses to protect us. Pump our adrenaline. Get us prepared. Pain is instinctive.
But internal, emotional pain, arguably the worst kind of hurt is not felt until after the damage has occurred? after the danger has passed? There is no longer a threat, yet we still feel hurt. And it is by submission. Whether it be a subconscious acceptance or a voluntary thing, we hurt by choice. You can choose to move on, to be happy, albeit the hard choices, they are still open choices. You can choose to be numb, to be anything, yet more often than not, the choice is to wallow in our sadness.