<human>: Give me the gist of the text in a nutshell

My father talked to me on the way out the house that he would see the doctor today.  This evening as I was preparing dinner he told me that the doctor advised him to cut out the sweets and high glycemic index foods.  I didn't participate in the conversation but I assume that he is well on his way to diabetes.

I couldn't care less.  I don't feel anything.  He doesn't exercise, he doesn't watch his diet.  In fact, he was already told to watch his diet 2-3 years prior.  

I have a good idea why I have a lack of empathy for him.  I simply don't love him.  He did a lot of damage to the family.  He was an abusive husband to my mother.  He was an abusive father for a long time.  Always with the crocodile tears, the crying, a month or two of corrected behavior and back to being the bully that he is.  Making a scene on my grandmother's birthday, the list goes on.  This sort of upbringing gave to me personality traits that I had to rectify.  Even now I still don't trust him.

If I had say something to him it would be, "Why wait till now?  Why wait until a doctor reminds you of your own mortality?  Your family carries a little bit of misery with them because all of the things you have done over the years.  Truthfully, there is not one person in the world that likes you.  You are an intolerable human being and I will enjoy watching you suffer as your body decays."

In every other area of my life I have all the empathy in the world for my fellow human beings.  I just simply cannot bring myself to ever feel sorry for the man who brought hurt to the family he was supposed to protect and provide for.
<bot>: My father is worried for his health.  I don't care what happens to him.  I don't even feel remorse for having this attitude.