Imagine trading out your own children for the child of your new spouse. That's the kind of cruel reality that is hard to envision, but the reality is that there are those of us out there who have had to experience this very thing. This thread was posted to Reddit's r/AITA (Am I the A--Hole) subreddit by Redditor u/Cheap-Tour9949. She explains that her father has repeatedly let her down, and as a result, the two have a “rocky” relationship. After her parents split, he remained a good parent unti…