A good TV show knows when to end. There are many shows still running to episodes that should have ended a long time ago.

1. The Big Bang Theory.

For a show that's just "Comic book reference. Laugh track. Movie Reference. Laugh track," you wouldn't think it would get renewed again. Sadly, it has been renewed for two more seasons.

2. Supernatural.

The creators say there is no end in sight for this show, and that's not good.

3. American Horror Story.

The series no longer cares about substance, and only focuses on shock factor.

4. The Walking Dead.

Speaking of shock factor, The Walking Dead only seems to care about shocking audiences without a reason why.

5. Spongebob Squarepants.

The childhood favorite has gone on too long.

6. The Simpsons.

Currently the longest running sitcom, it's time for the record holder to be put to rest.

7. Agents of S.H.I.E.L.D.

ABC's show can't compare to Marvel's other shows on Netflix.

8. The Voice.

Singing competitions are sold to audiences as a way to break into the music industry. With American Idol, only a few achieved this, and The Voice has seen less success.

9. The Bachelor.

The unrealistic portrayal of love is no more than mindless entertainment, but still, there's no reason for it to keep going except to make fun of it.

10. Doctor Who.

Even though I like Capaldi, and am looking forward to Mackie's performance, the show might be due for another hiatus. Thank goodness Moffat is leaving.