I was inspired by this topic I discovered today in my travels online. I agree wholeheartedly with inflicting pain and anguish on your story characters. Life is about problems and solutions, of crisis and overcoming obstacles. Pain also offers the best teaching tool, with tempering the character with strength. (both inner and outer)
I also found this as a writer’s tip to kill off a character if you face writer’s block. Such action immediately creates drama and something for the other character to deal with. Even having a character believed dead causes enough raucous to add more issues into your storyline.