My hero has fallen

Well for the first time I am going to post something not positive in my life I am going through. I just found out today my grandfather who is a huge role model to me has bladder cancer. He is the reason I followed my heart and went with my career. He pushed me to be better and knew I could do it. He was a heart surgeon with his own family practice up until about 5 years ago when we made him retire because he was well into his 80s and doing too much. He has a law degree from humphreys and was high up on the city council. He is a highly respected man in our community. My grandmother has parkinsons and he has been taking care of her daily since her diagnosis. She needs around the clock care. I feel like a knife has been jabbed in my heart. I am supposed to be up for work in 6 hours to work a 13 hour day and somehow I doubt I will be sleeping at all. I knew the day would come when he would pass due to age or due to illness. I just dont want him to be in any pain. He is a very prideful man and would never admit to being in pain.
My second fear is their estate. I know my grandmother will go soon after he does because she lives because of him. This will leave numerous homes they own, cars, original shegall and picaso paintings, stocks, and everything imaginable that he could invest in. He has millions of dollars. I am sick thinking about how my family is going to behave. One aunt I know is wanting everything that is jewlery to go to her and my other aunt. A comment was made that nothing should go to the grandchildren that is for their parents to decide. Well I want NOTHING! Then they want to sell all the houses. One of which my grandpa built on park woods dr and its beautiful he has been in it since 1955. How they could let that home go is horrible. I dont want to be here to see everyone peck at what they can to feel like it was all distributed evenly. I DO NOT WANT A DIME! I want nothing to do with this madness. I wish we were moving tomorrow. I dont want to live this horror right now. The family is about to be turned upside down and torn apart for greed and I want no part of it. I just hope they respect my grandmother when he passes and someone takes care of her. I will step up gladly if no one else will. But I am sure my aunt from chico will have none of that she runs the show. I am a person that values money but its money I make not the money of others.
So next friday I will be at the hospital all day while they perform exploratory surgery on his bladder to see how bad it is. If its bad the will close him up and say how long he has left. If its good maybe some chemo and removal. But will he do that. He is 87 years old and I know how stubborn and set in his ways he is. He will refuse treatment if it will only make him suffer more. So I am going to cherish what little time i have left with him. Go and support him at the hospital and offer to help in any way I can. God I love him so much and this hurts so bad :(