The show didn’t do too badly in terms of longevity and made it through a full 12 seasons.

As such a “monster hit,” we have to wonder why in the world the series ended.

Now we finally know why it got canceled.

The Big Bang Theory cast

CBS originally planned to bring in actress Amanda Walsh to play Penny rather than Cuoco.

Most of the time, those quirks annoyed and even angered the other characters on the show.

It really isn’t terribly astonishing then that the producers just couldn’t envision continuing the series without Parsons.

Chuck Lorre and The Big Bang Theory star Kaley Cuoco

We have to admire Parsons' priority of keeping things interesting and fresh for viewers!

Sometimes, fiction and real life do intersect or even mirror each other at times.

Now Parsons is married, and eventually, his character in the series married as well.

Jim Parsons and Johnny Galecki from The Big Bang Theory

Or maybe Parsons simply felt he could no longer connect with Sheldon as much anymore.

The main difference in its filming style compared to other shows involves camera usage.

Specifically, single-camera versus multi-camera shooting.

Jim Parsons from The Big Bang Theory

The Big Bang Theory’s ratings were dropping

Ratings are the lifeblood of television.

While in its 2015-2016 season, the series raked inover 20 million viewers.

By 2018, the mean number of viewers the series garnered each week hovered at approximately 18 million.

the cast of The Big Bang Theory

One or two million fewer viewers may not seem like such a huge deal at first glance.

But could the beginning of the end have started even sooner than that?

That gives the impression of the case, according to an article published byMetro.

Jim Parsons from The Big Bang Theory

Could it be that the script writers struggled even back in Season 8 with new material?

With age comes… creepiness?

There is an old saying that with age comes wisdom.

Jim Parsons and Mayim Bialik from The Big Bang Theory

In some cases, this old adage can most certainly hold some truth to it.

In the case ofThe Big Bang Theory,however, this saying doesn’t seem to hold water.

The Guardianmade an interesting observation with this statement.

The Big Bang Theory cast

When the show began, the characters were young people who were roommates and friends.

However,The Big Bang Theorycast members didn’t seem too surprised that their 12-year run was ending.E!

NewsinterviewedJohnny Galecki, whose character, Leonard, was a mainstay of the series.

The Big Bang Theory set

Could CBS have been tired of paying The Big Bang Theory cast big salaries?

These talks were evidently news to Bill Prady, the executive producer of the series.

Hissimple responseof “Huh” to the news on Twitter spoke volumes, even though it was incredibly short.

Melissa Rauch and Simon Helberg from The Big Bang Theory

Could this discrepancy in responses from executives involved in the show have contributed to the end of the series?

The hope of a reunion down the road, naturally.

Actress Mayim Bialik spoke toMetroabout the likelihood of a reunion just over one year after the series finale aired.

Simon Helberg and Kunal Nayyar from The Big Bang Theory

Our apologies to the fans ofThe Big Bang Theoryto have to report this prediction.

Here’s hoping for a full cast and crew reunion ofThe Big Bang Theorysometime down the road!

Johnny Galecki, a star of The Big Bang Theory

Melissa Rauch and Mayim Bialik of The Big Bang Theory fame

The Big Bang Theory star Mayim Bialik

The Big Bang Theory cast