I don't want to stop smoking.
What is stopping you from quitting?
I just love it. My dad smoked and died of cancer and my brother smokes and got sick and yet I won't quit.
As you can see from your family's experience smoking is dangerous. You should use your father's death as motivation to quit! Quitting smoking will help you live a longer healthier life.
I think I'm going to live longer with it.
Your idea that you will live longer by smoking flies in the face of the evidence you just presented about your family's smoking issues. If you don't quit, you will end up following them into the grave.