I liked "We Are Young" when I first heard it, same with "Somebody That I Used To Know."
Now that I've heard each of them well over 100 times... not so much. That is the ultimate test, though, isn't it? I can listen to Zeppelin over and over and I never tire of it. If my ear catches it when I'm out or when watching something, I go "Nice!" When I hear these other songs in the same situation, I go "Enough!"
It's horrible how over played songs get. The fun and gotye song especially. And now the jepsen. :
The thing with LZ and the like is that there's a depth to the writing that isn't there in many popular songs today