Even though Absalom led a rebellion that threatened to destroy him, David's love remained fiercely intact.
Absalom was David's enemy, the very one who tried to usurp his throne and put him to death. Yet, in his grief, David doesn't mention Absalom's treachery, his sin, or the political consequences. His focus is solely on the personal loss of his son.
This highlights a powerful, albeit complicated, aspect of fatherly love. It's a love that can persist even in the face of betrayal and deep hurt. David's lament, 'Would I had died instead of you,' speaks to a sacrificial love that wishes to bear the pain of the loved one, even at the ultimate cost.