Maybe that is why so many people root for the prequel.
Although The Big Bang Theory was loved by many viewers, it was also tremendously hated by others. And amidst the blatant hatred of the cast or geek culture in general, there were some legitimate points of criticism. From misogynistic and racist jokes to the forced, annoying laugh tracks, the show always had room for improvement.
And some of the deeper issues bothered everyone so much that even the hardcore fans of the show can admit to wishing the writers would do better.
One of the biggest things that ruined the experience for viewers who were actually invested in the characters' stories and relationships was the insincerity of the dialogue.
The desire to cram in as many jokes as possible is completely understandable for any sitcom, but many of The Big Bang Theory's jokes were not funny enough to make up for the ruined emotional moments.
Fans quickly came to the realization that they would rather get a moment of reassurance that the characters actually cared about each other than a weak punchline.
The writers, however, didn't seem to live up to those expectations.
A good example of such a scene would be almost any interaction between Amy and Sheldon. As much as the audience was familiar with all of Sheldon's quirks by this point, the fact that he never once let the moment stay emotional felt weirder every time it happened.
Was there any point in having a romance storyline if there was never any intention of exploring it fairly?
Fortunately, Young Sheldon, the show's prequel, quickly learned from its predecessor's mistakes and allowed for as many emotional scenes as the plot required. This is especially nice considering that the show is about family relationships, and we all know how rocky they can be at times.
Perhaps, that is one of the reasons for many people to enjoy Young Sheldon much more than they ever enjoyed The Big Bang Theory. Emotional connection to the characters will always be key.