Often people think they need to fulfill their goals before they die, in a world that death is no longer a limiter of the time, people could finish those lists of goals, but at the same time. When you finish that set of goals you need more, and in the end you can end up spiraling into boredom, there is not much to do as you have done everything you wished for, and others simply are unable of finding other interests.
A world without death offers the possibility of making everything you wish to do, but it also opens the door to stagnation when you find yourself unable to feel anything of a thrill. Conflict is often the motor that pushes a story, but you do not got a conflict with death in your life anymore, you just exist.
It becomes a race against your will, can you find what to do with all the time? What goal can you make now that you have all the time? Without the conflict with death you end up seeing your conflicts mostly will be with everyone else now, what if someone is making the same goal as you and even better than you? How are you supposed to compete with someone who has 90 years more of experience than you and will keep getting more?
Is interesting how life can change without death on it. But personally I find it also scary on the sense of how it changes the perspective on many areas.