I've had this experience a couple years ago where I had to go under for a sudden/unplanned surgery. It felt like I should be worried, but I realized that I was 100% ok with not waking up from that.

We already live so much further past what our lifespan "in the wild" would be. Even ~75yrs is already excruciatingly long. I don't understand people who want to prolong it even further.