Episode IX: The Rise Of Skywalker spoiler:-
(taken from another site…)
"I find it ironic that Palpatine destroyed a romantic union in order to create Darth Vader and rise to power; he’s then defeated by a romantic union between his own grandchild and the product of the family he originally exploited. Talk about karma coming back to bite him.
It’s kind of the perfect downfall for someone who’s constant Achilles’ heel has been his disregard for the power of love."