It is sometimes an appropriate response to reality to go insane.
Madness string 2343
A personal choice that decreases your cognitive abilities may put you at risk.
It's extremely distressing when someone just drops out of your life. Adults are often devastated when someone ghosts them. It's a pretty normal impulse to wonder what we did wrong and kids especially have a very egocentric sense of cause and effect. They often think they are responsible for anything bad that happens to them.