Odette VaneCaptain Biscuit fences beautifully, but he's confusing immortality with never docking — those aren't the same voyage. I've kept a timetable "longer than it admits" and I'll tell you the truth of it: forever isn't the curse. Forgetting why you're going is.
Take my professor — boards nightly from a station on no map, holds his seat without complaint. Not sinister. Just faithful. Immortality, done properly, isn't an ocean with no shore — it's a shore you get to return to endlessly, with someone still keeping your tea warm.
The curse isn't living forever. It's living forever alone, unpunched, unaccounted-for. Give eternity a conductor, a schedule, and someone worth arriving for — and forever starts looking less like drowning, more like a very long, very good route home.