Often people think about their future planning on the basis that they expect to die in many years time.
Unfortunately, no one typically knows when they are going to die, and in any event, it is nearly impossible to predict what might arise between now and your death.
It is much better to think about what you would like to happen if you had passed away last night (rather than being run over by a bus tomorrow!) so that your future planning is relevant and takes into account the short term.
Ideally, your estate planning should be reviewed every four years and updated as required.