Please read! What do I do?

My fiancé called me a million times today saying he had an emergency and after I called him back assuming he had his dick mangled by a power drill, he just tells me his brother is dying has 6 months and stomach cancer at 30 , he doesn’t talk to or like his brother now that he is dying he is all upset which I understand but he got mad because I don’t view death as a horrible thing I’m not scared to die I think death is a “good thing” going to heaven or staying in this world full of struggling and stress seems like a really easy choice to which is better . So I was a little insensitive not on purpose . Now he is ignoring me because of this I feel bad but he knows my veiws on death and that I don’t react by sobbing of being upset people die we all die the only death that really upsets me I children because no person should ever have to put there child in a grave . So I have a question how do I be more sensitive what do I say? Because I said well hopefully he makes the best best of his last months and how is that an emergency? Because I just don’t view it as one I can’t take his cancer away I can’t grant him life everlasting so how is t an emergency? 😰😫 what’s wrong with me ?!! I’m in the dog house and feel like an asshole. (I am one 100% but i don’t know what to say to my fiancé)