I worry about death a lot and I'm only mid 30s. A lot of my family have passed away very young and although a lot of it was lifestyle led, a lifestyle I do not lead, it's definitely contributed to what I would say can be quite major health anxiety at times. I am better than I was but still worry.
I'm hoping as I move into my 40s I give less a **** about stuff like that and with each passing decade I worry less about death rather than more.
Aside from death

I am hopefully looking forward to more of the same as the previous decade - a happy marriage, discovering new skills, and eating my way around the world