Fat Bart was great but quality has been horrible the past five plus years I still watch; but not as enthusiastically as I used to watch.
Best years were when Conan O'Brian was on the writing staff.
I have enjoyed many of the musical numbers ... particularly the one at the brothel where Marge bulldozes it down.
I prefer "classic Simpsons" reruns to new episodes; but I look forward to Treehouse of Horror every October/November.
Spoofs on X-Files, In Search of, Rear Window, It's a Mad...World, have been memorable.
When they zoomed out from Homer on the sofa skyward to the house, the street, the city, ..., the planet, the galaxy etc. although they "hid" Springfield underneath a cloud bank, it certainly looked like it centered on Springfield, Illinois.
They used to be funny, now they're just running out of material. I think it's got a good number of seasons ahead of it, but it's just gonna be stretched out like "Happy Days". They need to quit while they're ahead.