Either positively or negatively, especially when revisited a few years down the line. Most importantly, have you even attempted to do a full series watch/re-watch to see how well the show held up?

'Modern Family'- The first few years the characters were all intelligent, fun folks with the odd quirks but then one-by-one, the characters wound up becoming stupid, annoying and unlikable to the point that a few years before it was over, I had to say 'never again' and switched it off. The only regret I have is that I didn't quit it earlier.

Charmed - first few seasons were great, then it devolved into a mess.

Small Wonder - I enjoyed this as a kid. It does not hold up on rewatch.

All in the Family...when I watched it in first runs, I thought Archie was a villain. Now I realize that Lear was the villain.

It's About Time - liked it as a kid, hard to stay focused on now
Welcome Back Kotter - okay back then, impossible to watch now (save Travolta)
Norman Lear shows - shocking and funny then, eye-rollers now

Mama's Family - much funnier now than I gave it credit for then - enjoyable watch, appealing cast
Baywatch - Thought I was too good for it then, very fun watch now! Nothing like it anymore