Guilt is irrelevant because it is an emotion that arises when everything is already over. It comes with the clarity that distance brings, with the "present me" judging the "past me," as if they were two different people... perhaps they are.

What is the point of blaming someone who no longer exists? Because that "me" from before who made a decision and got it wrong did so with the emotional, mental, and physical resources I had at that moment... I didn't know any better, I couldn't do any more, or I did what I thought was right, what I thought was bearable?

That's where guilt becomes irrelevant because there is no real betrayal of oneself when one acts from one's human limits.