I like being alive. I like being a conscious being. I do not like the thought of that ending one day.
when you get older & have experienced some of the infirmities of old age & survived one or more life threatening diseases, & know there are more awaiting you, the thought of that ending one day will be much easier to accept.
You don't have to like the idea of letting go, however, it is far better and healthier to accept that everything ends and not dwell on the end so as to enjoy the now.