Imagine suddenly you no longer exist, poof, from one day to the next there is no more you.
What if you knew that this day would come in a month?
What if it wasn’t for another year?
Or in 5 years?
Would you spend your remaining time differently than you do now?
If so, why aren’t you already doing it?
Sure. No need to save up or plan for a future that never comes, so I’d stop saving up money and probably stop working depending on how far in the future it is. Then try to cram as many things that I always wanted to do as possible into my remaining time.