This show had so much potential to become a groundbreaking comedy. But the producers had to turn it into a formulaic sitcom with predictable romantic subplots. Show started going downhill after Penny & Leonard get together. The whole thing felt forced & unnatural. Absolutely zero chemistry. Penny & Zack would've been 10 times funnier.
And Sheldon marrying Amy? His character got ruined because of this. He was fine as the quirky asexual character that he was in the early seasons, but nope the producers had to turn him into a conventional character for the sake of profits & appealing to the masses. Total waste of creativity