Life after death?

[Purplundy]

Well your existence is undoable in the sense that it did happen. But, it's mark on the universe may not have much to do with who you were.

Depends on what mark you're talking about. If you chop down a tree in the forest, that tree won't be there after you die because you used your muscles and some metal to knock it down. Nothing spiritual there.
Then there are the "bigger" things, like the people you helped while alive. That ultimately changes communities, societies, and the world at large for the better or the worse.