I am not a Paramore stan in the slightest (well maybe after this song) but "Ain't No Fun" is such a classic. The song has so much replay value because it's such an organic and distinctive pop-rock feel good tune. I've not grown tired of it yet, and it was in my top 5 favorite songs from last year.
I'm sorry, but this radio edit(while I know is necessary) is terrible. How are you going to cut out the climax and most essential part of the song? It just feels like an unfinished demo now, and I'm sure there was a better way to go around it.