I felt Simpsons lost it by S7. When other shows lost their magic: Southpark - S5 It's Always Sunny In Philadelphia - S6 Arrested Development - "S4" Deadwood -

I felt Simpsons lost it by S7. When other shows lost their magic: Southpark - S5 It's Always Sunny In Philadelphia - S6 Arrested Development - "S4" Deadwood - ended before its time! New Girl - S3 Big Love - S3 GoT - S7 Friends - S6 Office - S7 Workaholics - S4 The League -S4 My baseline seems to be around 5 +- 2 seasons. Saw another poster say same. Similar dynamics apply in any creative job -- the writers can get bored and complacent, early success leads to staff getting lured away, etc. Must make it extremely hard to maintain quality.