certainly as a younger person the end seems distant.
Yes. The end seems really far away when you are young but not when a person is young and has a terminal illness and has been told he would die soon.
The older people feel closer to their graves but their are yet no certainty that the young would have an opportunity to age.
So then, I believe death can come knocking at any time and any age however, like you, I would rather reflect on Life. Making life counts matters in every sense of it and making the best of life by daily efforts should be the goal of the living, least the living becomes a living dead.
It's good to have this ethos and yes, you could die today, any of us could. It makes sense to get some value from life whilst the chance is there right?