At the age of 100 from natural causes surrounded by people I love after living a wonderfully fulfilling life, accepting that we never truly die as we're as much a part of the world and universe as the ground we walk on.
Alternatively, getting kidnapped and murdered some time within the next decade.
I can't tell when I will die. I only look at the future of a few years from now and I don't take in my life as a whole. I could die when I'm old, or I could die a few years from now. Death is unpredictable, and we're all going to be surprised by its spook one way or another.
Surrounded by pillows that I spend about an hour wallering around on until they're supporting me body just right to be most comfy, then realizing I can't reach the remote/wireless keyboard to my media device of choice. Enraged I have a stroke.
Slip into a world where the air I breathe is mine,
With nothing to overwhelm me and nothing to cloud my mind,
Be anyone, do anything I'd ever wanna try,
Time doesn't exist here, I will never die