I watched every episode up until season 24, after giving it QUITE a few seasons to "get good" again. I watched a few episodes of the newest season on TV the other day; it seemed better than the last seasons I watched, but nothing NEAR as good as the old seasons. It just feels like they keep on jumping the shark with every single episode; advertising "see Lady Gaga in the new Simpsons episode!" or "Unmissable Family Guy/Simpsons crossover", and if that's the selling point of your adult cartoon, you've lost the plot.
In fact, the closest thing to the early Simpsons I find these days is Bob's Burgers. It's not as slapstick or prop comedy funny, but the dialogue and plot reminds me a lot of the old Simpsons episodes.
Point is, I think it might be better than it was a few seasons ago, but it's still no longer the show I got to know and love.
Hmm, I don't think I'll bother to go out of my way to watch them based on that. I was really quite saddened by some of the season 18 episodes, I don't want to disappoint myself again! 14 seasons and a game (Hit & Run) is plenty anyway; enough that by the time I get to the end it's been long enough that I can start again at the beginning.
Maybe I'll check out Bob's Burgers one day.