It is Mother's Day, so I thought this would be a good topic. One of the best for me is when Dru confronts her mother on Y&R, but I cannot find a clip of that. In primetime, Abby and Olivia's scenes when Olivia was a drugs were top notch.
I actually liked that time period. They finally made Sami grow up for the most part. It was nice to see the character change and become full circle over time.
As for Chloe/Lucas, I think they were paired because they were the only two unattached people at that time. Everybody was so invested in Sami/EJ and I'm sure they also really wanted to break Chloe out of that Brady/Philip loop. I never saw them as an endgame pairing though.