Those over 40 with no childen....what in life do you look foward to?

I’m 45. My mother is 88 and very ill with Alzheimer’s. I feel sure she will die within the next 6 months. My closest sister has two forms of cancer. I worry she will die any time. It seems that as I hit my 40s everyone around me started getting sick and dying. I don’t have any children. So it just seems to me like life is just going to be more of the same from here on out. I want to know what you look forward to in life. You 40+ people with no children.