[sombremesa]

Pretty much nothing will happen, unless you have dependents. Whatever will happen might have mattered for you, but you're dead.

Quite a lot of people have died already with not a lot of consequence.

[ssm008]

I agree that on the whole, nothing matters. But in a felt sense, my life matters more when I have other people to care for and interact with or some goal that needs to be reached. Reflecting on my inevitable end gives a sense of urgency and an appreciation of the people around me.