It's absolutelty an irreversible hysteresis. That's more about not wanting to have fear for dying. After the actual dying, you (probably) don't have a desire to be alive, so the only real problem is the fear leading up to it.
I would prefer not to die soon, not only because it would be unpleasant but also because my death would be inconvenient for my employer, distressing for my friends and family, bad for charities I donate to, etc. And also because there are various things I would like to do that, if I get hit by a car tomorrow, I will never get to do.
(The last sentence is debatable. You might say that my preferences just evaporate and stop mattering at all when I die. I wouldn't agree, but I don't have a knock-down counterargument.)
_first?!_
I believe you have your priorities wrong. Most regret not spending enough time with their loved ones. You only get one life after all.
Prove it :)
Your current preferences matter now. You currently don't want to die tomorrow in your sleep, therefore dying tomorrow in your sleep is already bad now. Independently of other things you want to do tomorrow or next week.
But, again, a reasonable person could disagree with most of that.