I wouldn't say I hate the show -- then, I doubt I'd watch it. But you can count me among the people who think it declined in quality around season 9 and truly got bad halfway through season 13. But the show's legacy is so great that I just feel like I'd be missing out on something by not seeing every episode. It's only a half hour of my time. The show is rarely painful to watch; it's an honest attempt at the good comedy they used to be able to do, but it fails in certain ways. And from some sort of academic standpoint, I kind of like seeing what goes wrong and thinking about how it could've been improved. It's kind of a great study, because you've got good and bad examples of comedy that can be compared to each other one a very one-to-one basis, because they're from the same series.
Even though the writing is several magnitudes worse now than it once was, it's still a well-crafted show in other ways, and it has some sort of aesthetic appeal to it. Partially because it's animated. I think a live-action show that goes bad is a bit harder to tolerate. Also, they still hit the mark once in a long while.
Now, I do make an effort to avoid repeating my criticisms of the show again and again in the talkback threads, because no one wants to see that. I only chime in when I have a specific criticism to offer on the current episode. Anything more would be just as much of a burden to me as to everyone else.