We have actually moved on from singing I Knew You Were Trouble over and over as a family. It only lasted about ten days. One of the four of us would mutter or hum a word and the rest would join in. My son is particularly good at correcting me when I get a lytic wrong.
Anyway—I surrender. My instinct to dislike things like Pink and Rhianna etc, has given way to singing along with 92.3 FM (not by myself of course). I still might think it is crap but it can be infectious.