There's plenty of great pop music today, it's just not always in the top 40. However, since the internet makes finding awesome artists more accessible than ever before [and since home-recording is more accessible than ever before] I would argue that there is probably MORE great pop music out there than in say, the 60s or 70s. You just have to dig a little to find it - but please, it's pointless listening to say, One Direction and claiming that music has regressed. There has been **** music from every decade - what about stuff like the Osmonds or the Bay City Rollers?
Here are some fantastic modern pop songs:
Of Monsters and Men - Little Talks - YouTube
Gotye - Somebody That I Used To Know (feat. Kimbra) - official video - YouTube
Shiny Toy Guns "Le Disko" - YouTube
Bastille - Laura Palmer - YouTube
I could go on, but you take my point.