Life Isn't Under Version Control
Each action is a permanent commit, pushed immediately to a shared reality. We can't reverse our actions; they're already out in the world. At best we can hope to revert a few of our bigger mistakes, by putting forth the effort to undo them.
But we are trained to feel cheated; we are trained in games to think that time is malleable, you should be able to go back, try again, save scum, do over. “Game Over” just means “retry” right?
Well, no. We have to take each step, knowing we can't reverse, we can only revert.