My dad's whole world revolved around my mom the way yours does around your kids, so when she died, his whole world was shattered. He broke his hip after that. My mother never would have let him take more pain pills than he was supposed to take, if she had still been alive. He was in the beginning stages of dementia then although we didn't realize this and know how bad it was until later. For example, if he took a nap, when he woke up, he thought it was morning and he would take all his medicine again. Even after my brother came to help him, he was so completely convinced that it was morning again that my very big brother had trouble dealing with him.