Um, there's a reason why The Simpsons are still on the FOX and Futurama isn't...
I do however think the decline of The Simpsons is being grossly exaggerated, at least slightly. The old stuff was great (seasons 1-8). I found the show slid a little downhill during the "Mike Scully era" (Seasons 11-12). After that, Al Jean did bring the show back to its standards a little but that didn't show until later. Seasons 15 and 16, in particular, are very, very good seasons. So far, the current season has been a little disappointing.
...Oh, and fireball, "Simpson's Safari"
was one of the worst episodes.
Tangent aside, I like Futurama too, for various reasons. Bender, in particular, really cracks me up. It shouldn't have been canceled, I say. I blame Rupert Murdoch. Still, I like The Simpsons much more.
Sorry for the tangent... I'm such a massive Simpsons nerd.