I used to watch it a lot around 2005 and they were so much fun. Since it's on prime I might try to catch an episode here and there.
I started watching part way through season 11, which aired in the first half of 2007, and I've been watching ever since. Once all the old seasons went up on Amazon Prime, I went back and watched, and I've now watched every season at least thrice.
If you stopped watching before they got to season 10, the modern seasons will look quite different, but it's still a really good show. Rumor has it they may restart season 33 toward the end of 2021 or early in 2022.