I have read a lot of discussion about how the Simpsons do today compared to the way they used to be. That's interesting to talk about assuming that we stop discussing what is better.
Overall, the Simpsons have been a good show, but it's not that the newer episodes are bad, I think the show needed to change. If you haven't noticed, the show being a cartoon will ALWAYS be attracted to by young people. Of course, most of us had to have been young when we first saw the show, but as time has gone by, we grew older and if the show creators kept pointing the show at older fans, younger audiences would start finding it becomming too intelligent, and the more intelligent you are, the less funny you are (it's a fact, Homer and Bart are bigger than Marge and Lisa). Besides, older fans may eventually stop watching with how long the show has been on and then the program will grow useless for prime time.
I am afraid that even if the program ran it's course, if I were the executive producer, I would still keep it going because, if you had not noticed yet, the Simpsons being in the prime time lineup isn't just there because people have always liked the show, it's there for it's reputition. People don't want it to go away, and if it does, I'll bet they will start hating the show, it doesn't matter how funny or how great it was, it went off the air and just for that, they don't like it anymore. That would just put the Simpsons into the situation disco was in after the 70's ended. I mean, how would you like to see some wear a black T-shirt with a crossed out Bart Simpson and the back of shirt says "Simpsons Suck"?
If you think the Simpsons are not good enough anymore, that's you but not everyone who doesn't. Perhaps if you still like the show, look to the reruns, not the new stuff. It's time to let the newer audiences like the show as it is. After all, nothing is really different assuming that Homer is loveable dope, Bart is cool, Lisa is smart, and Marge is there to keep things straight.
In other words, the Simpsons have to change and so do we.