Why Xbox 360 owners believe that Live is superior to PSN

Burn360: Your Gamertag didn't start off as this fancy keeper of all things Xbox, it initially was just an identity. A Gamertag was just a name that friends saw as online and available to play. What it developed into is what keeps Xbox 360 owners off of the Playstation Network. Regardless of what features it holds now, at first release PSN was lacking of what Xbox Live was offering. Friends lists mainly, at the time Xbox Live was more like a club than a community. Over the last seven years, both networks have blossomed into full fledged multimedia hubs that offer movies, TV, music, games, social networking, and online gaming. Yet Sony was a little late to the party of online gaming, almost refusing to see the importance of a full featured service. Needless to say they have been playing catchup ever since. So why do Xbox 360 Owners believe that Xbox Live is superior to PSN? The majority of visitors to our site are Xbox 360 users and we asked this question to a sample of our readers.
What makes Xbox Live better than Playstation Network?
A) Don't know never played on PSN.
B) Xbox Live Social Aspects are greater than PSN (Voice Chat, Friends Lists, Recent Players, Messaging, Cross Game Chat)
C) PSN is better than Xbox Live, it's free isn't it?
D) All my friends are on Xbox Live.
E) My Gamertag/achievements is something I have built and want to keep
F) Exclusive Content Like Halo Waypoint & Major Nelson
The results weren't very surprising Burn 360 readers responded accordingly...