You absolutely do not sound like a cold hearted daughter. You vent away!! You care about your Dad and that is why you are frustrated, angry and all upset. You want him to see the light like you did. I don't know how you feel about prayer, but if you do believe in it then now would be an excellent time to pray. Put it all in His hands and pray/talk your heart out. You will be doing something for your Dad and you will also be doing something for yourself by turning it over to a higher power. Just a thought.