the reasons Roger is a bad father
1) When was he even going to bother introducing his daughter to his gf before he proposed? That was very inconsiderate on his part.
2) When Alyssa was trying to tell him that Clarice wasn't who she appeared, he wouldn't listen to her.
3) He let Clarice drag him around on a leash. I understand the poor guy was probably quite horny and wanted to get some, but it was a selfish thing to let Clarice rush the wedding and drag them to NYC without taking his daughter's feelings into consideration.
4) When Clarice was about to slap Alyssa/Amanda, Roger stood there and did nothing! Even as a kid I always wondered why Roger didn't do more to protect his kid when some woman was trying to hurt her. That's my biggest peeve - he just stood there and let the butler do the parenting for him.
What does it mean to regret when you have no choice? It was death. I chose life.