In the mid '80s, about 30 years after the famous 39 episodes, and after they'd been in steady syndication for 30 years, Gleason and Carney were on a talk show. The 2 of them and the host were talking about the lasting fame that the Honeymooners have had. Carney asked Gleason why he thinks the series was so popular for so long. Gleason's reply? "They were funny!".
He nailed it. A simple, 3-word answer spoke volumes about the Honeymooners. "How sweet it is".
PS: I can't remember the talk show they were on, but I think they may have been promoting a movie they made together. "Izzy and Moe"