Hurt, pain, negative emotions…these seem to all be things that people are afraid of.  We want to be happy, to enjoy life, to impress people with our optimistic perfection, and meanwhile soothe our own psyches into thinking that everything is good, or it will be if we can just control that one uncontrollable thing…
The uncontrollable thing might be a spouse, a stress, an illness, a situation, a parent…whatever.  There is that one thing that seems to thumb its nose in our faces everytime things look like they are coming into some sort of order.
And then hurt rushes in.