Guilt and remorse are not pleasant, but they're not useless either. Your failire to recognize that denotes emotional immaturity and why you need to be taken care of. My guy, you are 70 years old. It's well past time to grow up.

All emotions, positive and negative, exist for a reason. They are key to our survival as a species. The trick is to understand them for what they are, not set yourself into staying in them (positive or negative) forevermore, and not to let others use them to manipulate you.