What if you die next month? Next weekend? Tomorrow? You never know what's around the corner. One little faux pas, and it could release horrendous consequences that extinguish your flame like a thumb and forefinger. Gone.
Gone. With no time beforehand to protect your computer.
unshifted on Reddit narrates a potential posthumous happening:
They'll have to learn how to use computers after you die. Who else can [your parents] turn to? Then one day while feeling whimsical, they'll go through the files on your computer. They'll find some papers you wrote ("He sure was a smart kid, wasn't he?" they'll say, teary-eyed). Then they'll find some political cartoons you've saved. It will remind them of you. Their loss will feel real to them all over again.
Then one of them will say, "Aw shucks, we need to update the pictures we have hanging around in the house. He probably has a couple pictures of himself on here. What's that thing we learned in that computer literacy class we took to honor his memory? Ah, yes. We'll just search for pictures and movie files. We'll be able to find the right ones." Then they'll see it. The search results for E:\Program Files\AIM95\config\default.
It's all downhill from there. They'll change your epitaph to "Here lies Liru. Filthy heathen sure loved tentacle porn."
Quote from a thread on Reddit on this topic.